Lexington Schools — Budget Crisis in Context

March 2026 · Data: Lexington Public Schools, MA DESE, Lexington Appropriations Committee

1. Enrollment: Declining — Not Booming

The Globe article threads a needle: it implies enrollment is falling (true) while simultaneously warning of an "onslaught" of new children from incoming housing (plausible but overstated). Both claims are technically correct but on very different timelines.

Enrollment is down 321 students (−4.7%) over four years. The decline is concentrated in elementary grades — the leading edge of a demographic wave as Lexington's single-family homeowners age. The FY2027 uptick is a small projected stabilization, not a reversal.

The superintendent's presentation notes "Overall PK-12 enrollment is down by 1% in a 5-year period, with most of the decline in the K-5 elementary level." The IEP picture runs in the opposite direction: total IEP students grew from 870 (FY18) to 1,000 (FY25) — a 15% increase even as overall enrollment fell. High-needs IEP students nearly doubled (150 → 265) over that same period, and each high-needs placement costs $50K–$80K+ annually vs. $10K–$15K for a standard in-district IEP.

2. The Budget: Where the Money Goes

Lexington's FY2027 proposed budget is $151.7 million, a 3.9% increase over FY2026's $146.0 million. That 3.9% figure sounds modest, but the district's level-service request was 4.6% ($152.8M). The gap — roughly $4.7M — was closed by cutting 72 FTE positions and drawing down $3.8M in Circuit Breaker reserve funds that should be held for future special education costs.

Budget History

FY2026 → FY2027: Where the Increase Comes From

The $5.7M increase breaks down as follows. Health insurance (~+$2.2M school share) sits in a separate town-wide line and is not included in the $151.7M school budget, so the true cost pressure is larger than it appears.

3. The Salary Puzzle: More Expensive with Fewer People

Perhaps the most counterintuitive number in the budget: Unit A (teachers) lost 13.7 FTE positions yet salary costs still rose $2.83M (+3.01%). How?

The answer to the apparent paradox has two parts:

1. COLA + step increases overwhelm FTE savings. Unit A teachers receive 2.75% COLA in FY2027 under their contract, plus automatic step increases for experience (typically another 1–2%). Applied to an $94M salary base, that's roughly +$4.2M in cost before any cuts. Saving ~$1M by eliminating 13.7 FTE nets out to +$3.2M — close to the actual +$2.83M.
2. The cuts hit the cheap end of the salary distribution. The 160 non-renewal letters went to early-career educators. Those teachers earn $70–80K, well below the $113K district average. Cutting them maximizes headcount reduction while minimizing dollar savings — leaving behind a senior, more expensive workforce that still gets full COLA and steps.

Unit C (instructional assistants) shows the same dynamic: 12 fewer FTEs but +$735K in cost, driven by a 3.25% COLA negotiated for FY2027. The ABA/BCBA line (7.0 FTE cut, $0 budget change) suggests those specialized positions may be funded through grants or billed differently.

4. Cuts in Context: How Lexington Compares

The article gives absolute cut numbers for several districts — dramatic in isolation, but misleading without knowing district size. Here's the relative picture:

Lexington and Chelsea are cutting proportionally similar shares (~6–7% of total staff). Boston's cuts, while enormous in absolute terms, represent a smaller proportional reduction. Brookline's 200+ figure is the outlier — but it is conditional on a $23.25M operating override failing at the polls in May. If voters approve the override, cuts would be far smaller.

Student-to-teacher ratios (2025–26, pre-cut) for reference: Lexington 10.3:1, Brookline 11.0:1, Chelsea 11.3:1, Boston 10.7:1, state average 11.7:1. All four districts start well below the state average, which gives some cushion — but also reflects genuinely smaller class sizes that parents will notice when they grow.

5. The "Onslaught" That Probably Isn't

The article's framing of new housing as a potential "onslaught" of new children deserves scrutiny. Lexington rezoned ~225 acres under the MBTA Communities Act in 2023, enabling ~1,600 new apartments and condos. The superintendent's presentation projects "+500 students from MBTA zoning changes may offset current declines." Is that realistic?

Student Generation Rates: Apartments Are Not Single-Family Homes

The core issue is that new MBTA-zoning development is overwhelmingly large apartment buildings, not single-family homes. Those building types produce children at very different rates:

Lexington's own 2025 enrollment study — which analyzed 24 existing housing developments and applied historical student densities to the new pipeline's actual bedroom mix — projects roughly 0.31 students per unit for the incoming MBTA developments. That's lower than the historical 0.70 average because the new buildings are heavily weighted toward 1-bedroom units. The Hartwell Avenue project (312 units) alone is 58% 1-BR.

What 1,600 Units Actually Implies

The superintendent's ~500-student figure is consistent with Lexington's own careful bottom-up analysis using actual bedroom configurations. It is not wild-eyed optimism. But several caveats apply:

• Timing: Lexington's January 2025 study projected only ~257 students from the 598 units with known completion dates through 2028. The rest of the 1,600 units are still in permitting or unbuilt.
• MAPC research finds no statistical correlation between housing construction rates and enrollment changes across 234 Massachusetts districts. Families moving through existing housing stock, birth rates, and demographic churn routinely swamp the contribution of new units.
• 500 students over 5–10 years is ~50–100 students per year in a 6,524-student district — less than 1% annual growth. It would slow the slide, not reverse it at any meaningful pace.
• The fiscal math cuts against new housing regardless. Even at 0.31 students/unit, the education cost is ~$8,200/unit/year against ~$3,500 in new property tax revenue. Each apartment is a net budget drain of $4,700–$15,000/year depending on assumptions.

6. The Underlying Structural Problem

Lexington's budget crisis isn't really about enrollment at all. It's about costs that grow faster than revenue regardless of how many kids show up:

• Proposition 2½ caps annual property tax levy growth at 2.5% plus new growth — a hard ceiling that generally yields 3–4% revenue increases in a growing town like Lexington.
• Salary + step costs grow 4–5% per year automatically on the existing workforce, before any new hires.
• Health insurance is up 9% this year (down from an initially projected 15%); the GIC premium trend has run well ahead of Prop 2½ for years.
• Special education out-of-district tuitions surged +18.7% over FY24–25 combined, and the number of high-needs students has grown 77% since FY18.
• McKinney-Vento (housing instability) enrollment is up 900% since 2020 — 170 students last year, each requiring federally-mandated transportation and services.

The district's five-year forecast (CLA Financial Review, 2025–26) projects total appropriations rising from $152.8M (FY27) to $169.9M (FY31) — roughly 2.7% annual growth — assuming no changes in service levels, no override, and favorable special education trends. That trajectory requires annual cuts or new revenue sources simply to hold even.

The new $659M high school (approved by voters December 2025, debt excluded from Prop 2½ limits) doesn't affect the operating budget directly — but it consumed the political capital for a tax override that might otherwise have prevented the current round of staff cuts. The district is now paying for educational excellence with fewer educators.