New York State’s class size mandate requires New York City public schools to adhere to specific student-to-teacher ratios, creating a long-term financial obligation for the city. This page covers CBC’s work on the mandate’s projected costs, the impact on the city’s budget gaps, the challenges of underbudgeting, the trade-offs regarding mayoral control, and the potential fiscal benefits of seeking state-level relief.
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The City should get relief from the State class size reduction mandate, which would save $1.2 billion.
Extending mayoral control without the class size mandate would allow the Mayor and Chancellor to use resources as they see fit to improve outcomes and student performance.
The City should reduce ineffective spending and improve operational efficiency, including seeking relief from the State class size reduction mandate, which could save approximately $1 billion annually.
Key Data
In June 2026, the CBC noted that while delaying the Class Size Reduction mandate by two years saves money in the short term, the City will still ultimately be required to spend more than $1.4 billion annually to comply.
In March 2026, the CBC highlighted that because the City had already reduced class sizes in high-need schools, the mandate primarily drives resources to low-need schools, requiring $170 million to be directed to the lowest need quartile of schools in school year 2024-2025.
As of November 2025, the Department of Education reported fiscal year 2026 class size reduction expenditures of $640 million, which the City later increased by $543 million to $1.2 billion in the Fiscal Year 2027 Preliminary Budget.
In November 2024, the CBC pointed out that no resources had been identified in the City's financial plan to fund the State-mandated class size reduction.
In April 2024, the CBC warned that the mandate's cost estimates do not include the hundreds of millions of dollars in debt service needed to fund a Department of Education estimated $30 billion to $35 billion of capital investment for compliance.
The city's decision to delay the class size reduction mandate provides temporary budget relief but ultimately commits the city to spending over $1.4 billion annually to implement the policy. This delay pushes the financial burden into the future rather than eliminating the long-term costs associated with the mandate.
Recommendations related to Class Size Mandates
The City should have rolled back the Class Size Reduction mandate altogether as it would have been more fiscally prudent.
Key Data
$1.4 billion
— The annual cost the City will be required to spend to reduce class sizes.
two years
— The duration by which the State Legislature delayed the implementation of the Class Size Reduction Mandate.
The New York City Fiscal Year 2027 Executive Budget relies on short-term strategies and pension gimmicks to close budget gaps, while city-funded spending is projected to grow by $24.4 billion between fiscal years 2025 and 2030. While the budget includes efforts to control special education and housing voucher costs, it continues to stretch out class size reduction, which offers minimal savings while necessitating increased spending on popular schools.
The state should relieve New York City from the Class-Size Reduction Mandate to help stabilize the budget. This policy change is necessary as the city needs to focus on reducing inefficient spending rather than relying on tax increases.
Recommendations related to Class Size Mandates
The State should relieve the City from the Class-Size Reduction Mandate.
Providing relief from state-imposed class size mandates could generate $1.2 billion in savings while maintaining smaller class sizes in necessary areas. This adjustment is part of a broader need to improve government efficiency and fiscal stability amidst concerns over the city's economic competitiveness.
Recommendations related to Class Size Mandates
Relief from Albany’s class size mandate could unlock $1.2 billion while preserving smaller classes where they matter most.
Key Data
$1.2 billion
— Potential savings from providing relief from Albany’s class size mandate.
The state budget is currently delayed, prompting calls for fiscal restraint to avoid future crises and ensure long-term stability. Relieving the class size mandate would provide $1.2 billion in savings for New York City.
Recommendations related to Class Size Mandates
The State should relieve the class size mandate, which would save the City $1.2 billion.
Key Data
$1.2 billion
— Potential savings for New York City if the class size mandate is relieved.
The state-mandated class size reduction program forces the city to spend billions on resources that often benefit low-need, high-performing schools rather than those with the greatest needs. Rescinding this mandate would save at least $1.2 billion annually, allowing the city to reallocate funds to improve overall student outcomes and performance.
Recommendations related to Class Size Mandates
The City should get relief from the State class size reduction mandate, which would save $1.2 billion.
Extending mayoral control without the class size mandate would allow the Mayor and Chancellor to use resources as they see fit to improve outcomes and student performance.
Key Data
$1.2 billion
— Annual savings the City could realize if the State rescinded the class size reduction mandate.
$170 million
— Amount of funding directed to the lowest need quartile of schools in school year 2024-2025 due to the mandate.
$1.6 billion
— Projected funding for class size reduction in fiscal year 2027.
$640 million
— Reported fiscal year 2026 class size reduction expenditures as of November 2025.
$1.2 billion
— Increased fiscal year 2026 spending on class size reduction as of the Fiscal Year 2027 Preliminary Budget.
New York City faces a significant fiscal challenge that requires reducing ineffective spending, including seeking relief from the state-mandated class size reduction requirements. Obtaining this relief could generate approximately $1 billion in annual savings to help stabilize the city's budget.
Recommendations related to Class Size Mandates
The City should reduce ineffective spending and improve operational efficiency, including seeking relief from the State class size reduction mandate, which could save approximately $1 billion annually.
Key Data
$1 Billion
— Estimated annual savings from obtaining relief from the State class size reduction mandate.
New York City can achieve up to $1 billion in savings by securing relief from the State class size mandate, which would help address the city's fiscal challenges. This measure is one of several identified opportunities to improve government efficiency and avoid tax increases while managing the city's budget.
Recommendations related to Class Size Mandates
The City should secure relief from the State class size mandate to achieve up to $1 billion in savings.
Key Data
$1 billion
— Potential savings from securing relief from the State class size mandate.
New York City should seek greater flexibility from the state regarding education policy, specifically by obtaining relief from the mandate that requires smaller class sizes. This mandate limits local decision-making authority and forces the city to allocate additional resources to schools that are already performing at a high level.
Recommendations related to Class Size Mandates
The City should seek greater flexibility from Albany, including relief from the class-size mandate, which constrains local decision-making and requires additional resources be spent on already high-performing schools.
New York City faces significant budget shortfalls that require operational efficiency and management reforms rather than tax increases to resolve. The administration is encouraged to seek relief from state-imposed class size mandates, which currently impose a $1 Billion financial burden on the city.
Recommendations related to Class Size Mandates
The Mayor should request relief from Albany’s class size mandate that costs the City $1 Billion, partly to support high-performing schools serving low-need students.
Key Data
$1 Billion
— The cost of Albany’s class size mandate to the City.
New York State should repeal the class size mandate, as it restricts mayoral flexibility and contributes to higher spending that exacerbates the city's budget gap. Advocating for this change is essential to allow for more efficient government operations and fiscal responsibility.
Recommendations related to Class Size Mandates
The State should repeal the class size mandate, which restricts the Mayor’s flexibility and drives higher spending that widens the budget gap.
The Mayor should advocate for the repeal of the class size mandate to improve fiscal flexibility.
New York City is significantly underbudgeting for the state-mandated class size reduction, with estimates of the shortfall ranging from $401 million to $467 million for fiscal year 2027. This underfunding occurs despite a 13 percent decline in public school enrollment since the 2015-16 school year, highlighting a need to better align educational spending with actual service requirements.
Recommendations related to Class Size Mandates
The administration should stop underbudgeting so that the preliminary budget reflects the full cost of expected services and activities, including the Class Size Mandate.
The administration should review where need for services has declined, such as public school enrollment which has dropped 13 percent, to align funding with actual needs.
Key Data
$467 Million
— CBC estimate of the fiscal year 2027 underbudgeting for the Class Size Mandate.
$401 Million
— City Comptroller estimate of the fiscal year 2027 underbudgeting for the Class Size Mandate.
$420 Million
— State Comptroller estimate of the fiscal year 2027 underbudgeting for the Class Size Mandate.
13 percent
— Decline in public school enrollment since school year 2015-16.
New York City's budget fails to account for the costs of complying with the State's Class Size Reduction mandate, which will require $450.0 million in fiscal year 2026 and grow to $1.4 billion annually by fiscal year 2028. This unfunded mandate contributes to significant outyear budget gaps, forcing the City to either identify savings or shift funds from other programs to maintain compliance.
Key Data
$450.0 million
— Estimated cost to implement the State’s Class Size Reduction mandate in fiscal year 2026.
$900.0 million
— Estimated cost to implement the State’s Class Size Reduction mandate in fiscal year 2027.
$1.4 billion
— Estimated annual cost to implement the State’s Class Size Reduction mandate in fiscal year 2028 and beyond.
$1,350
— Projected cost in millions for the Class Size Reduction mandate in fiscal years 2028 and 2029 as listed in the budget adjustments table.
New York City's budget significantly underbudgets the costs associated with state-mandated class size reduction requirements, with fiscal monitors estimating the shortfall between $168 million and $633 million for the upcoming fiscal year. These figures highlight the broader issue of the city artificially shrinking its budget gaps by failing to accurately account for the true costs of mandated programs.
Key Data
$168M
— The City Comptroller's estimate of underbudgeted expenses for the Class Size Mandate.
$322M
— The State Comptroller's estimate of underbudgeted expenses for the Class Size Mandate.
$633M
— The Financial Control Board's estimate of underbudgeted expenses for the Class Size Mandate.
The November 2024 Financial Plan indicates that the city faces future budget gaps exceeding $8 billion annually, which is significantly higher than the $5.5 billion reported by the administration. Additionally, the current financial plan fails to identify the necessary resources to fund the state-mandated class size reduction initiative.
New York City's budget faces significant long-term financial pressure, partly due to the state's class size reduction mandate which is projected to cost $1.4 billion annually. This unfunded mandate contributes to projected budget gaps that are expected to exceed $9 billion per year in the coming fiscal years.
Key Data
$1.4 billion
— The projected annual cost to implement the State’s Class Size Reduction mandate.
New York City's fiscal outlook is clouded by significant underbudgeting of planned services, with future budget gaps projected to grow between $5.5 billion and $5.7 billion from fiscal years 2026 to 2028. These financial challenges are exacerbated by the need to fund significant costs, including the State's class size mandate and potential expansions of housing voucher programs.
The state-mandated class size reduction program poses a significant fiscal risk to New York City, with projected costs expected to reach $1.4 billion by fiscal year 2028. These additional expenses, alongside other unfunded mandates and housing voucher expansions, threaten to widen the city's budget gaps significantly in the coming years.
Key Data
$450 million
— Estimated cost of the class size reduction mandate in fiscal year 2026.
$900 million
— Estimated cost of the class size reduction mandate in fiscal year 2027.
$1.4 billion
— Estimated cost of the class size reduction mandate in fiscal year 2028.
New York City faces significant, unfunded costs from the state's class size reduction mandate, which are not yet fully reflected in the financial plan. Compliance with these requirements is estimated to cost $433 million in fiscal year 2026, eventually rising to $1.3 billion annually once fully phased in.
Key Data
$433 million
— Estimated cost of compliance with the class size reduction mandate in fiscal year 2026.
$1.3 billion
— Estimated annual cost of compliance with the class size reduction mandate when fully phased in.
$866 million
— Projected cost of the class size reduction mandate in fiscal year 2027.
The New York City fiscal year 2024 budget faces significant, understated gaps that are projected to grow from $8.7 billion to $11.5 billion by fiscal year 2027, partly due to uncounted expenses such as the state's class size mandate. These financial pressures are compounded by fiscal cliffs and chronic underbudgeting of specific programs.
New York State Budget Fiscal Year 2024 Major Actions and Fiscal Risks As of First Quarter Update New York City Fiscal Year 2024 Adopted Budget and Outlook
The proposed legislation mandating class size limits in New York City public schools would impose significant financial burdens, with estimated annual operating costs of at least $500 million for grades kindergarten through five alone. Rather than mandating a single strategy, the state should prioritize outcome-based accountability systems that allow districts to tailor evidence-based interventions to their specific student needs.
Recommendations related to Class Size Mandates
The Governor should veto A.10498/S.9460, which would set class size limits in New York City public schools.
The state should support efforts to improve performance and accountability rather than imposing rigid, single-strategy mandates.
Accountability systems should be universal and not treat one district differently, providing flexibility to assess districts based on their unique needs.
The state should focus on outcomes and allow each district to choose a portfolio of evidence-based interventions tailored for its students and schools.
Key Data
$500 million
— The preliminary estimated annual operating cost for reducing class size to the new limit in just grades kindergarten to five.
$18 million
— The amount the City has already dedicated to a class size reduction pilot in 72 schools.
2.6 million
— The total number of students in New York State.
New York City's reliance on expensive new school construction to address crowding is inefficient, as alternative strategies like rezoning, repurposing existing space, and adjusting admission policies could significantly reduce the need for new capacity. Implementing these cost-effective measures could save the city and state at least $2.4 billion in capital spending while still addressing the city's school crowding challenges.
Recommendations related to Class Size Mandates
New school construction should be used only when alternative strategies are inadequate.
A more flexible system of overlapping or grouped zones could more effectively balance enrollment between nearby crowded and non-crowded elementary school buildings.
This problem could be solved by capping enrollment at levels consistent with the DOE capacity standards, because adequate high school capacity exists citywide and students are selected for schools on a citywide basis.
The DOE should make unused middle school capacity available to crowded elementary schools by reconfiguring the grades served in underutilized middle school buildings.
Administrative space in schools that are not themselves crowded should be converted to classroom capacity to help reduce the problem.
Key Data
$2.4 billion
— Potential capital spending reduction and annual debt service savings of at least $150 million by substituting alternative strategies for planned new construction.
95,984 seats
— The total shortage of seats in the 618 crowded school buildings.
16,000 seats
— The estimated additional capacity that could be gained from more flexible elementary school zoning.
31,854 students
— The excess enrollment in the 93 crowded high school buildings.
$121,270
— The average cost budgeted per new seat in the 2020-2024 capital plan.
2,217 seats
— The number of seats that could be used to reduce middle school crowding by utilizing non-crowded buildings that could contribute at least 56 seats.
New York State's special education system is heavily burdened by over 200 mandates that exceed federal requirements, contributing to unsustainable cost growth and staffing ratios that are among the highest in the nation. To address these fiscal pressures, the Board of Regents and the Legislature should approve and enact proposed mandate relief measures that align state procedures with federal standards and provide school districts with greater operational flexibility.
Recommendations related to Class Size Mandates
The Board of Regents should approve the third round of mandate relief proposals as is, and the Legislature should follow suit and move swiftly to make the necessary statutory changes to reduce burdensome, unnecessary special education mandates.
The membership of the Committee on Special Education (CSE) should be conformed to the federal IEP team membership by repealing the state-imposed additional requirements for specific committee members.
The Committee on Preschool Education (CPSE) membership should be aligned with the federal IEP team by repealing the requirement that the committee include an additional parent member.
The state should adopt the federal standard for initial evaluations by repealing the requirement that each evaluation include a physical examination, psychological evaluation, social history, and other specific assessments.
The requirement in law that Boards of Education have plans and policies for appropriate declassification of students with disabilities should be repealed.
The Commissioner of Education's role in appointments to State-supported schools and the requirement that these schools conduct duplicative student evaluations should be removed from regulation to reduce administrative overhead.
Key Data
$10,874
— Instructional spending per pupil for general education in 2008-09.
$26,551
— Instructional spending per pupil for special education in 2008-09, which was 2.4 times greater than general education costs.
7.5 percent
— The average annual growth rate of instructional spending for special education over the decade leading up to 2008-09.
$1.3 billion
— The amount cut from state aid for school year 2011-12 compared to the previous year.
5.5
— The number of students per staff person in New York's special education system.
10.1
— The U.S. average number of students per staff person in special education.
New York must improve its public education system by implementing a statewide accountability system, optimizing school building usage through rezoning and year-round schedules, and restructuring teacher compensation to prioritize performance over longevity. These reforms, alongside targeted funding, are essential to meeting the constitutional requirement for a sound basic education for all students.
Recommendations related to Class Size Mandates
The classroom space requirements for a sound basic education should be met through a combination of two measures – redistricting of existing schools and operating existing schools on a year-round schedule.
A new statewide system of accountability for schools should be established, including programmatic objectives indicating planned class sizes, pre-kindergarten enrollment and other instructional interventions.
School districts should be limited to using the incremental funds for interventions with proven effectiveness such as expanded pre-kindergarten opportunities and smaller class sizes in the early grades.
The State should establish a longer-run goal of significantly increasing the share of all public school funds raised from statewide revenues and decreasing the mandated share raised by local school districts.
Teachers should be given financial incentives for better performance to make a larger share of compensation conditioned on job performance and to de-emphasize longevity and graduate educational credits.
Key Data
$12 billion
— The amount of savings in capital expenses that can be achieved by redistricting schools and operating them on a year-round schedule.
216,000
— The number of seats identified as a long-term shortage in New York City public schools.
136,430
— The number of unused seats available at under-utilized schools in New York City during the 2002-03 school year.
64,231
— The number of excess students enrolled at crowded schools in New York City during the 2002-03 school year.
469
— The number of schools in New York City that were considered crowded during the 2002-03 school year.
New York City public schools face significant inefficiencies, with teachers spending less time in the classroom compared to their statewide counterparts due to administrative and contractual obligations. Data indicates that New York City classrooms are between 11 percent and 32 percent larger than those in the rest of the state, highlighting a disparity that could be addressed by reallocating non-instructional teacher time.
Key Data
13.9
— Pupil-teacher ratio in New York City public schools.
13.0
— Pupil-teacher ratio in New York State public schools.
11 percent and 32 percent
— The range by which average class sizes in New York City are larger than those in the rest of the state.
New York City can achieve necessary classroom space for smaller class sizes and other educational needs more efficiently by rezoning school districts and implementing year-round education schedules rather than relying solely on expensive new construction. These strategies would provide sufficient capacity for over 1.2 million students, avoiding the long delays and high costs associated with building new facilities.
Recommendations related to Class Size Mandates
New zoning policies should be adopted to alleviate crowding and create additional capacity to accommodate smaller class sizes.
The school system should implement year-round education schedules to increase school capacity and provide space for smaller class sizes more efficiently than new construction.
Policymakers should prioritize strategies that use existing facilities wisely to promptly provide children a seat in a structurally sound and well-equipped school without the delays or costs of new construction.
The city should reconfigure grades across schools, such as shifting some ninth grade students to middle schools, to better utilize existing capacity for class size reduction.
Key Data
$14.7 billion
— Total estimated cost in 2003 dollars needed to provide New York City students with the facilities required for a sound basic education.
$5.7 billion
— Cost for new capacity to accommodate more than 93,900 students, including pre-kindergarten and a maximum class size of 16 in grades K through 5.
$2.7 billion
— Cost for a five-year program to provide space for classes smaller than current sizes.
136,430
— Number of seats representing unused capacity at under-utilized schools that could be leveraged through rezoning.
64,231
— Number of students representing excess enrollment at crowded schools.
Research into school finance reforms across several states indicates that while increased spending does not automatically improve educational outcomes, targeted investments can be effective. Specifically, evidence suggests that expanding pre-kindergarten opportunities and implementing smaller class sizes in early elementary school grades are among the most promising strategies for enhancing student achievement.
Recommendations related to Class Size Mandates
Additional spending is more likely to result in gains in student achievement when the money is well targeted.
The forms of spending most likely to have positive results are expansion of pre-kindergarten opportunities and small class sizes in the early elementary school grades.
Policymakers should prioritize small class sizes in the early elementary school grades as a form of spending likely to have positive results.
Key Data
$12 million
— Cost of the Tennessee STAR program over four years.
11,600
— Number of kindergarten children in 80 schools involved in the Tennessee STAR program.
13-17
— Number of students in reduced-size classes in the Tennessee STAR program.
22-25
— Number of students in normal-size classes in the Tennessee STAR program.
480
— Number of words in the vocabulary of poor children at age 3.
750
— Number of words in the vocabulary of middle-class children at age 3.
New York City public schools require significant capital investment to address overcrowding and achieve smaller class sizes, with estimates suggesting billions are needed for new construction. Rather than relying solely on new building projects, the city could more efficiently meet these space requirements by rezoning school districts and implementing year-round education schedules.
Recommendations related to Class Size Mandates
The city should meet classroom space requirements by redistricting existing schools to balance capacity and demand.
The city should implement year-round education schedules to increase school capacity without the high costs of new construction.
The city should increase teacher time spent on classroom instruction by reducing preparation and administrative periods to help accommodate smaller class sizes.
The city should enhance principals' managerial discretion regarding staff assignments to better deploy teachers for effective instruction.
The city should restructure the teacher pay schedule to make a larger share of compensation conditioned on job performance rather than longevity.
Key Data
$3.9 billion
— Cost to build new capacity to accommodate 68,200 students projected to be in overcrowded classrooms.
$2.7 billion
— Cost for a five-year program to provide space for classes smaller than current sizes.
13.9
— Number of pupils for each teacher in New York City public schools.
1,268,574
— Total capacity available from year-round education and full use of capacity through rezoning.
1,225,145
— Total capacity required to meet the needs for alleviating current crowding, accommodating smaller class size, and expanding pre-kindergarten enrollment.
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