Aldine ISD - EdTribune TX - Texas Education Data

Houston ISD Hits Its Lowest Point in Two Decades

Thu, 02 Apr 2026 12:00:00 GMT

In this series: Texas 2025-26 Enrollment.

Katy ISD^↗ enrolled 44,212 students in 2005. Houston ISD^↗ enrolled 208,454. The suburban district on Houston's western edge was roughly one-fifth the size of its urban neighbor.

By 2025-26, Katy has grown to 95,295 students, more than doubling in two decades. Houston ISD has fallen to 168,812, its lowest enrollment in at least 22 years and a loss of 39,642 students since 2005, a 19.0% decline. The ratio between the two districts has compressed from five-to-one to less than two-to-one.

That compression tells a story about where Houston-area families are raising their children, and where they are choosing not to.

The acceleration

Houston ISD was already shrinking before the Texas Education Agency took over the district in June 2023, appointing Superintendent Mike Miles to overhaul struggling campuses. But the pace of loss has roughly doubled since.

In the two years before the takeover (2021-2023), the district lost an average of 3,630 students per year. In the three years since (2024-2026), that average has climbed to 6,826 per year. The 2025 and 2026 losses, at 7,564 and 7,227 respectively, are the largest single-year declines in the dataset.

A January 2026 report from the University of Houston's Institute for Education Policy Research & Evaluation documented 13,208 fewer students enrolled in HISD as of 2024-25 compared to 2022-23. The report also found that ninth-grade enrollment fell 15.1% in two years and that the share of students exiting for private education doubled from 4.4% to 8.1%.

"The student and teacher populations in Houston ISD are very different than they were before the takeover." — Toni Templeton, senior research scientist, University of Houston

Whether the takeover caused the acceleration or merely coincided with it is not fully separable in the enrollment data. The district was losing students before Miles arrived. But the UH report noted that the 130 campuses overhauled under Miles's New Education System lost students at roughly five times the rate of non-overhauled campuses: 7% versus 1.5% in a single year.

The suburban donut

The losses at Houston ISD are not disappearing from the metro area. They are redistributing outward.

Seven outer-ring suburban districts, all within commuting distance of Houston's core, collectively added more than 199,000 students since 2005. Katy^↗ alone grew by 51,083 students (+115.5%). Lamar CISD^↗ in Fort Bend County more than tripled, from 18,440 to 48,787 (+164.6%). Tomball ISD^↗ grew from 8,730 to 23,271 (+166.6%). Conroe ISD^↗, anchoring the northern fringe, added 32,500 students (+80.7%).

The inner ring tells a different story. Aldine ISD^↗, directly north of Houston, grew steadily through 2012 but has since reversed course, losing 10,985 students (-17.4%) in just five years since 2021. Pasadena ISD^↗ dropped by 3,159 (-6.7%) since 2005. Alief ISD^↗, on Houston's southwest border, has lost 19.9% of its enrollment over the same period, almost exactly matching Houston ISD's percentage decline.

The pattern is not unique to Houston. Urban-to-suburban enrollment migration is one of the most persistent trends in American public education. But the scale here is unusual: the seven outer-ring districts gained a combined 199,328 students over two decades while Houston ISD and three inner-ring districts (Aldine, Alief, and Pasadena) lost a combined 55,967.

A kindergarten signal

Enrollment trajectories are built at the bottom of the pipeline. Houston ISD's kindergarten enrollment has fallen 30.5% since 2005, from 16,239 to 11,294.

The kindergarten class has dropped every year since 2022, losing roughly 700-800 students per year. In 2026, Houston ISD enrolled 4,945 fewer kindergartners than it did in 2005. Because each kindergarten cohort moves up one grade per year, the current class sizes will determine district enrollment for the next 12 years. A smaller entering class does not recover.

First-grade enrollment follows the same trajectory: 18,176 first-graders in 2005, 12,015 in 2026, a 33.9% decline. The shrinking pipeline means that even if the district stopped losing students to suburban transfers tomorrow, overall enrollment would continue falling for years as larger upper-grade cohorts graduate out and smaller lower-grade cohorts move up.

The demographic undercurrent

Not every group has left Houston ISD at the same rate. Black enrollment has fallen 41.5% since 2005, from 60,577 to 35,461, a loss of 25,116 students. Hispanic enrollment, the district's largest group, has dropped 17.0%, losing 20,869 students.

White enrollment, by contrast, is essentially flat: 18,428 in 2005, 18,092 in 2026, a decline of just 336 students. Asian enrollment has grown 42.0% since 2011 (the first year of expanded race reporting), from 6,254 to 8,881.

The compositional effect is subtle but real. Houston ISD's Black student share has dropped from 29.1% to 21.0%. Hispanic students remain the majority at 60.5%, down slightly from 62.6% in 2012. White and Asian students have grown as shares of a shrinking total, rising from 8.8% and 3.1% (in 2011) to 10.7% and 5.3%.

The instructional programs these demographic groups receive carry different per-pupil costs, and a shift in the student body's composition changes the mix of services a district must provide even when the overall enrollment trend is clear.

Funding follows the students out

Each student who leaves Houston ISD takes per-pupil state funding with them. Texas's basic allotment has been frozen at $6,160 per student since 2019, a figure that has lost roughly 22% of its purchasing power to inflation over that period. For a district that has shed 20,478 students in three years, the enrollment decline represents a substantial reduction in annual state revenue, even before accounting for the formula's weighted allotments for specific student populations.

Houston ISD's 2025-26 budget included $24.9 million in cuts and the elimination of 103 positions, on top of 1,400 central office positions eliminated the previous year. The Houston Landing reported that the enrollment shortfall in 2024-25 alone was expected to reduce funding by at least $50 million, nearly $30 million beyond what the district had budgeted for.

"Since [2019], we've had about a 22% to 23% inflation rate, and this has put an enormous amount of pressure on public schools throughout the state of Texas." — Kevin Brown, Texas Association of School Administrators, ABC13

The funding challenge cuts both ways. Suburban districts absorbing Houston's former students are themselves strained. Katy ISD, despite its growth, faces projected budget shortfalls under the same frozen basic allotment. Growth districts must build schools and hire teachers faster than state revenue arrives. Declining districts must close schools and reduce staff while maintaining fixed costs across half-empty buildings.

What to watch

Houston ISD's kindergarten class is now 30.5% smaller than it was two decades ago. That pipeline determines the district's enrollment ceiling through 2038. Whether the current trajectory flattens or steepens depends on two forces outside the district's direct control: whether the state increases the basic allotment above $6,160, and whether the TEA's takeover produces the kind of academic results that convince families to stay.

The UH report documented that teacher retention dropped to 58.6% and that nearly one in five HISD teachers is now uncertified, up from less than 1% before the takeover. If workforce instability accelerates family departures, the next round of enrollment data could push the district further below the floor it set in 2026.

Detailed code that reproduces the analysis and figures in this article is available exclusively to EdTribune subscribers.

The Growth Machine Stalls

Thu, 26 Mar 2026 12:00:00 GMT

In this series: Texas 2025-26 Enrollment.

For 15 consecutive years, Texas added students. Every year from 2006 through 2020, the enrollment count climbed, absorbing 1.1 million new students over a period when most large states were already shrinking. The pandemic interrupted that streak with a 120,133-student drop in 2021, but the state recovered quickly, posting a 101,222-student rebound in 2023 and setting an all-time high of 5,530,499 in 2025.

Then 2026 happened. Enrollment fell by 47,195 students, a 0.9% decline, to 5,483,304. It is the first non-pandemic drop in 22 years of data, and it did not arrive as a surprise. Growth had been decelerating for nearly a decade: from gains of 96,574 in 2010 to just 13,035 in 2025. The machine was slowing long before it stopped.

A decade of deceleration

The 2026 decline did not materialize overnight. Annual growth peaked at 121,701 students in 2006, then gradually eroded. By 2018, the state was adding fewer than 42,000 students per year. By 2019, just 31,388. A one-year spike in 2023, when post-COVID recovery inflated the numbers by 101,222, masked the underlying trend. The two years that followed, 2024 and 2025, each added only about 13,000 students, a growth rate below 0.25%.

The 2026 loss of 47,195 is smaller than the pandemic's 120,133-student hit. But the pandemic drop had an obvious external cause and an immediate rebound. This decline has neither.

The state now sits 501,578 students below where a pre-COVID linear trajectory would have placed it. That gap, equivalent to roughly the enrollment of the state's 10 largest districts combined, represents both students who never materialized and growth that will not return.

The Big 5 are all shrinking

Texas's five largest traditional districts are each well below their peak enrollment, and all five declined in 2025-26. Houston ISD^↗, the state's largest, lost 7,227 students in a single year, dropping to 168,812. Since its peak of 215,408 in 2017, the district has shed 46,596 students, a 21.6% decline. Dallas ISD^↗ fell by 5,468 to 134,308, now 16.6% below its 2006 peak. San Antonio ISD^↗ has lost a quarter of its enrollment since 2005.

Fort Worth ISD^↗ is down 22.6% from its 2017 peak of 87,233. Austin ISD^↗ has fallen 19.9% from its 2013 high of 86,233.

Across the state, 517 of 1,197 districts lost students in 2025-26. The top 10 losers alone account for 35,199 students, 74.6% of the statewide decline. The top 25 losers lost 59,717, more than the total statewide loss, meaning hundreds of growing districts merely offset a fraction of the hemorrhaging at the top.

Houston's accelerating exit

Houston ISD's trajectory stands apart. The district's 4.1% single-year decline in 2025-26 accelerated a pattern that researchers at the University of Houston have linked to the state's 2023 takeover of the district.

"Was there a trend of decline before the takeover? Yes. Has that trend been exacerbated by the takeover? We think those two things are coinciding." — Toni Templeton, UH Institute for Education Policy Research and Evaluation, Houston Public Media, Jan. 2026

The UH report found that more than 13,000 students left HISD in the first two years under state management, with the percentage of students leaving nearly doubling from 4.4% to 8.1%. High school enrollment dropped 15.1% in two years, a steeper decline than the pre-takeover trend. The share of uncertified teachers rose from 0.3% in 2016-17 to 19.8% in 2024-25.

The 7,227-student loss in 2026 pushes HISD's total decline since its 2017 peak past 46,000 students, a loss larger than the entire enrollment of Aldine ISD^↗, the district's northern neighbor. Aldine itself lost 4,178 students in 2025-26, a 7.4% drop, the steepest percentage decline among the state's top 15 losers.

Where the growth went

The top of the gainers list reveals a pattern: charter networks and exurban boomtowns. IDEA Public Schools^↗, the state's largest charter operator, added 30,128 students since 2020, a 60.9% increase, reaching 79,608. Prosper ISD^↗, north of Dallas, doubled from 16,789 to 33,651 over the same span.

Among the 2025-26 gainers, seven of the top 15 are charter networks: Premier High Schools, BASIS Texas, Harmony Public Schools (three regions), Great Hearts Texas, and YES Prep. Charter enrollment rose from 422,836 in 2024 to 449,066 in 2026, an 8.2% share of statewide enrollment, up from 7.7% two years earlier. Over the same two-year period, traditional districts lost 60,380 students while charters gained 26,230.

That divergence has a fiscal dimension. Under Texas's ADA-based funding formula, each student who leaves carries per-pupil state revenue with them, but the sending district's fixed costs, its buildings, buses, and central office, do not shrink proportionally. Districts losing 3-5% of enrollment annually face a structural mismatch between revenue and overhead.

The pipeline is closing

Perhaps the most consequential signal in the data is not what happened in 2026, but what has been building for years in the lower grades. Kindergarten enrollment peaked at 391,421 in 2014 and has fallen steadily since, reaching 350,815 in 2026, a 10.4% decline. Over the same period, 12th grade enrollment rose from 305,243 to 394,947, a 34.8% increase.

The lines crossed in 2021, when for the first time, Texas enrolled more 12th graders (362,888) than kindergartners (360,865). In 2026, the gap is 44,132 students: the K-to-12 ratio has fallen to 0.89, meaning the state is graduating students substantially faster than it is enrolling new ones.

The demographic math behind this is straightforward. TEA's own attendance projections note that "the Texas state demographer estimates a significant decline in the number of four-year-olds in Texas, with a loss of over 40,000 from 2020 to 2025." TEA projects statewide average daily attendance will decline 0.31% in 2025-26 and 0.38% in 2026-27. The agency's projected ADA for 2026-27, 4,990,784, would represent a continued contraction.

Reporting from the Fort Worth Report found that a majority of ZIP codes in Fort Worth ISD saw declining birth rates between 2014 and 2023, and that Arlington ISD's kindergarten count fell from 4,610 in 2014 to 3,347 in 2024.

"We are still the fastest-growing state in the country and yet, we are seeing these low numbers." — Rocky Gardiner, demographer, Fort Worth Report, May 2025

Frozen funding meets falling headcount

The enrollment decline arrives at a particularly bad time for Texas school finance. The state's basic allotment, the per-student foundation of the funding formula, was frozen at $6,160 from 2019 through 2025 before HB 2 raised it to $6,215 for the 2025-2027 biennium, a 0.9% increase against six years of cumulative inflation. Districts are absorbing both inflationary cost increases and declining student counts simultaneously.

For the 201 districts now at all-time low enrollment, the formula compounds in a single direction: fewer students means less state funding, but buildings still need heating, buses still need drivers, and debt service on construction bonds issued during the growth years does not adjust downward. The 307 districts that reached all-time high enrollment in 2026, many of them suburban or exurban, face the inverse problem: growth without proportional facility capacity.

Neither group is well-served by a funding formula built on the assumption that enrollment always rises.

What the data leaves unresolved

Charter growth of 13,185 students in 2025-26 accounts for some redistribution within the public system, but home-schooling, private schools, and interstate migration are invisible in TEA enrollment data. The state does not publish a comprehensive accounting of where exiting students go.

The Houston metro complicates any single explanation. HISD lost 7,227 students, the largest single-district decline. But neighboring Cypress-Fairbanks ISD^↗ lost 2,961, Aldine lost 4,178, and Pasadena ISD lost 2,257. The entire metro is contracting, not just the district under state management.

The turn

For two decades, Texas school administrators could plan around a reliable assumption: next year, there will be more students. Bond elections, staffing plans, and facility master plans all embedded that assumption. In 2026, for the first time outside a pandemic, the assumption broke.

The state's school finance system was built on the assumption that enrollment always rises. The basic allotment sat frozen for six years. The 201 districts at all-time lows and the 307 at all-time highs need opposite things from that formula, and neither group is getting them. The 2026 numbers are the first test of whether Texas can govern a school system in reverse.

Detailed code that reproduces the analysis and figures in this article is available exclusively to EdTribune subscribers.