Independent Texas school research. TEA data, clearly explained. Not affiliated with the state agencyTEA.
Open-enrollment charter campus
Horizon Montessori Public Schools · McAllen · 309 students
Official school websiteSchool information and family resources
At a glance
Under TEA’s current rules, the available rating history is moving down; under the rules in force back then it scored 83 in 2021-22. The current score is below the 81.4 average for 297 rated charter campuses serving a similar economic context.The current score is below the 79.6 average for 247 similarly sized rated charter campuses.The current score is below the 81.7 average for 829 rated Texas charter campuses.
Evidence worth noticing
STAAR result
Among 297 charter campuses with a similar economic-disadvantage rate reporting this measure.
See the full measureSTAAR result
Among 297 charter campuses with a similar economic-disadvantage rate reporting this measure.
See the full measureSTAAR result
Among 289 charter campuses with a similar economic-disadvantage rate reporting this measure.
See the full measureSTAAR result
Among 247 similarly sized charter campuses reporting this measure.
See the full measureCurrent strength
82 +3 pts vs 79
Current strength
82 +5.9 pts vs 76.1
STAAR result
Among 828 Texas charter campuses reporting this measure.
See the full measureCurrent strength
82 +3 pts vs 79
Current strength
13.7% −8.8 pts vs 22.5%
Selected positive signals, not a summary of performance. The same rules choose them on every page: only the latest one-year gain, results meaningfully better than the currently selected comparison with broad reporting, and distinctive top-three placements. Demographics, staffing and spending cannot become academic “wins.” The overall rating and the full results below remain the complete picture for this school.
Horizon Montessori - STEM Academy is rated C by TEA, scoring 79 out of 100 for 2025-26 — below the 81.4 average for 297 rated charter campuses serving a similar economic context. It is down 11 points since 2021-22.
Ranks 188th of 297 rated charter campuses serving a similar economic context (tied with 8 others).
Horizon Montessori - STEM Academy is rated C by TEA, scoring 79 out of 100 for 2025-26 — below the 79.6 average for 247 similarly sized rated charter campuses. It is down 11 points since 2021-22.
Ranks 139th of 247 similarly sized rated charter campuses (tied with 4 others).
Horizon Montessori - STEM Academy is rated C by TEA, scoring 79 out of 100 for 2025-26 — below the 81.7 average for 829 rated Texas charter campuses. It is down 11 points since 2021-22.
Ranks 528th of 829 rated Texas charter campuses (tied with 22 others).
Put the numbers in context
Follow the solid line to see how this school has changed. Turn comparison lines on or off to add context.
2021-22 is shown under the refreshed methodology TEA adopted in 2023, so it is comparable with later years. Under the original scoring it was rated B with 83 that year.
Comparison lines follow the current rated cohort backward through time. The table gives the number in that fixed cohort that reported a score each year; it can be smaller than cohort membership.
| Year | Rating | Score | Selected comparisonSimilar economic-disadvantage rate | StateTexas charter average |
|---|---|---|---|---|
| 2025-26 | C | 79 | 81.4 297 reporting | 81.7 829 reporting |
| 2024-25 | B | 84 | 80.9 291 reporting | 81.3 797 reporting |
| 2023-24 | B | 84 | 79.3 285 reporting | 79.5 776 reporting |
| 2022-23 | A | 91 | 79.4 278 reporting | 79.6 749 reporting |
| 2021-22 | A | 90 | 84.4 266 reporting | 84.5 700 reporting |
Texas builds the overall rating from the better of Student Achievement and School Progress, weighted 70%, plus Closing the Gaps at 30%. School Progress is itself the better of Academic Growth and Relative Performance. The 60, 70, 80 and 90 rules mark the letter-grade thresholds.
| Domain | Score | Grade | Points to next grade |
|---|---|---|---|
| Student Achievement | 75 | C | 5 |
| School Progress | 82 | B | 8 |
| Closing the Gaps | 72 | C | 8 |
| Academic Growth | 66 | D | 4 |
| Relative Performance | 82 | B | 8 |
Closest to moving up: School Progress, 8 points below A in that domain — the nearest of the measures that count toward the overall rating.
TEA does not add the domains up. The overall score is the better of Student Achievement and School Progress at 70%, plus Closing the Gaps at 30%. For this school that better measure is School Progress (82), so Student Achievement (75) is published above but does not enter the overall score at all — gaining points there changes nothing until it passes 82.
Percentage of tests at or above each level. Masters is a subset of Meets, which is a subset of Approaches. The selected-comparison tick on each bar marks the average for charter campuses with a similar economic-disadvantage rate — a comparison TEA does not publish.
Counts in the comparison controls describe full cohort membership, not the denominator of every average. Each average uses only charter campuses for which TEA reported that measure; metric-specific reporting counts are shown on the STAAR, graduation and CCMR rows and may vary.
Placed after the results deliberately: this is context for reading them, not an explanation of them.
Horizon Montessori - STEM Academy
Selected comparison average For charter campuses with a similar economic-disadvantage rate · 297 reporting for every category shown · 297 in full cohort
Selected comparison average For similarly sized charter campuses · 247 reporting for every category shown · 247 in full cohort
Texas charter average 829 reporting for every category shown · 829 Texas charter campuses in full cohort
Context only. These counts are not rankings, comparisons, or judgments about school quality.
The mobility count and rate use TEA’s separate 2024–25 campus denominator shown above, not current enrollment. This site does not recalculate a missing rate.
The first figure is TEA’s student count for this accountability summary. It is a separate publication from the fall PEIMS enrollment shown above and can differ; this site does not substitute one for the other. Counts come from TEA’s 2025-26 accountability summary, fetched 29 August 2026. A reported zero is shown as 0. Small-number and complementary masks, unavailable values, and blank not-reported fields stay separate and are never estimated. TEA masking definitions.
TEA-reported student enrollment for each available school year. Enrollment growth or decline is not a measure of school quality.
TEA reported 309 students in 2025–26, a decrease of 22 (6.6%) from 2024–25.
2025–26
Decrease · −6.6%
Decrease · −21.0%
| School year | Students enrolledHorizon Montessori - STEM Academy | Change from previous school year | Average enrollmentselected comparison |
|---|---|---|---|
| 2021–22 | 391 | First available year | 491.4 |
| 2022–23 | 381 | Decrease of 10 (2.6%) | 506.8 |
| 2023–24 | 342 | Decrease of 39 (10.2%) | 506.3 |
| 2024–25 | 331 | Decrease of 11 (3.2%) | 511.9 |
| 2025–26 | 309 | Decrease of 22 (6.6%) | 508.7 |
The selected comparison column is the average enrollment among reporting charter campuses in that group. It changes with the comparison control; this school's own counts do not.
Source: TEA PEIMS Student Program and Special Populations Reports, fetched 24 August 2026. TEA reports these counts from its fall student snapshot; changes compare adjacent reported school years.
These counts show how enrollment changed, not why. Attendance-zone changes, school openings or closures, grade reconfigurations, transfers and population shifts can affect the total.
TEA’s annual student and action counts, kept separate and divided only by the matching full-year enrollment. These figures describe removals from instruction, not a simple safe-or-unsafe score.
10.9% of cumulative year-end enrollment
21.79 per 100 students
2024–25
| School year | Cumulative enrollment | Studentsall discipline | Students% of enrollment | Actionsall discipline | Actionsper 100 students | Studentsselected comparison average % | Actionsselected comparison average per 100 |
|---|---|---|---|---|---|---|---|
| 2020–21 | 436 | Not reported | — | Not reported | — | — | — |
| 2021–22 | 438 | Suppressed | — | 13 | 2.97 | — | 17.2 |
| 2022–23 | 415 | 20 | 4.8% | 33 | 7.95 | 11.3% | 19.2 |
| 2023–24 | 370 | 35 | 9.5% | 77 | 20.81 | 11.0% | 18.9 |
| 2024–25 | 358 | 39 | 10.9% | 78 | 21.79 | 10.3% | 16.9 |
| Category | Students | Students% of enrollment | Actions | Actionsper 100 students | Studentsselected comparison average % | Actionsselected comparison average per 100 |
|---|---|---|---|---|---|---|
| All discipline | 39 | 10.9% | 78 | 21.79 | 10.3% | 16.9 |
| In-school suspensions | 33 | 9.2% | 56 | 15.64 | 6.1% | 8.4 |
| Out-of-school suspensions | 11 | 3.1% | 22 | 6.15 | 8.6% | 12.2 |
| DAEP placements | Not reported | — | Not reported | — | — | — |
| Mandatory DAEP placements | Not reported | — | Not reported | — | — | — |
| Discretionary DAEP placements | Not reported | — | Not reported | — | — | — |
| JJAEP placements | Not reported | — | Not reported | — | — | — |
| Mandatory JJAEP placements | Not reported | — | Not reported | — | — | — |
| Discretionary JJAEP placements | Not reported | — | Not reported | — | — | — |
| Expulsions | Not reported | — | Not reported | — | — | — |
| Mandatory expulsions | Not reported | — | Not reported | — | — | — |
| Discretionary expulsions | Not reported | — | Not reported | — | — | — |
Selected comparisons use rates, not raw counts, so differently sized charter campuses can be read on the same basis. Each average uses only group members for which TEA reported that rate; this school's own counts and rates remain fixed.
Students, actions and incidents are different units. One student can receive multiple actions. The categories overlap, so they must not be added together. Rates use TEA's matching cumulative year-end enrollment, not the October enrollment shown elsewhere on this page.
Source: TEA Discipline Reports, fetched 24 August 2026. Suppressed values stay unavailable rather than being estimated. Use 2020–21 cautiously because remote instruction during the pandemic changed students' exposure to in-person discipline. TEA consolidated its separate action-group reports into this product in 2024–25; this trend uses only the stable “All discipline” heading.
The campus and its parent district stay fixed while the selected same-sector txschools.net comparison changes with the page-wide control. TEA's own peer group and statewide reference remain visible as separately published, fixed TEA references.
For 2025, TEA reported $9,934 per student for this campus, $14,420 per student for its parent district, Horizon Montessori Public Schools, $18,972 per student for the Texas average.
Not reported in this TEA campus finance record: TEA peer group.
| Year | Horizon Montessori - STEM Academy | Parent district: Horizon Montessori Public Schools | Texas average | Selected comparison average | Reportingselected comparison |
|---|---|---|---|---|---|
| 2018 | $7,117 | $9,078 | $13,054 | $8,220 | average for charter campuses with a similar economic-disadvantage rate · 201 rated charter campuses reporting |
| 2019 | $7,164 | $9,858 | $13,108 | $8,763 | average for charter campuses with a similar economic-disadvantage rate · 219 rated charter campuses reporting |
| 2020 | $8,210 | $11,158 | $14,058 | $9,506 | average for charter campuses with a similar economic-disadvantage rate · 237 rated charter campuses reporting |
| 2021 | $7,980 | $10,917 | $14,797 | $9,404 | average for charter campuses with a similar economic-disadvantage rate · 256 rated charter campuses reporting |
| 2022 | $9,107 | $11,681 | $15,708 | $10,944 | average for charter campuses with a similar economic-disadvantage rate · 268 rated charter campuses reporting |
| 2023 | $9,997 | $12,296 | $16,792 | $11,284 | average for charter campuses with a similar economic-disadvantage rate · 275 rated charter campuses reporting |
| 2024 | $10,546 | $13,317 | $18,125 | $11,722 | average for charter campuses with a similar economic-disadvantage rate · 282 rated charter campuses reporting |
| 2025 | $9,934 | $14,420 | $18,972 | $11,620 | average for charter campuses with a similar economic-disadvantage rate · 291 rated charter campuses reporting |
The selected-comparison reporting count is year-specific and can vary across the table. Dollar amounts are shown as TEA published them and are not adjusted for inflation.
Horizon Montessori - STEM Academy
Selected comparison average For charter campuses with a similar economic-disadvantage rate · 297 reporting for every category shown · 297 in full cohort
Selected comparison average For similarly sized charter campuses · 247 reporting for every category shown · 247 in full cohort
Texas charter average 829 reporting for every category shown · 829 Texas charter campuses in full cohort
| Grade or subject | Average students per classHorizon Montessori - STEM Academy · 2024–25 | Average students per classselected comparison |
|---|---|---|
| Kindergarten | 19 | 21.2 |
| Grade 1 | 18 | 22 |
| Grade 2 | 16.9 | 23.7 |
| Grade 3 | 21 | 24.4 |
| Grade 4 | 19 | 24.5 |
| Grade 5 | 17.5 | 24.2 |
| Grade 6 | 14.9 | 22.7 |
| Secondary English | 14.7 | 17.7 |
| Secondary math | 13.8 | 17.7 |
| Secondary science | 22 | 18.7 |
| Secondary social studies | 22 | 19.1 |
These are TEA's actual class-size averages for the grade or subject shown, not the student-to-teacher ratio. TEA reported 11 of 12 categories for this campus; the categories are not combined into a made-up campus-wide average. Each selected comparison average uses only schools reporting that same grade or subject.
Source: TEA Texas Academic Performance Reports, fetched 24 August 2026.
The Texas Education Agency publishes the underlying accountability reports and data downloads. Ratings, outcomes, demographics, staffing and finance on this page come from TEA data available through txschools.gov, fetched 15 August 2026. TEA’s Reports and Data Portal links the official bulk files. Enrollment history comes from TEA's PEIMS Student Program and Special Populations reports, fetched 24 August 2026. The student-count context comes from TEA’s bulk accountability summary, fetched 29 August 2026; TEA’s masking definitions explain withheld values. The dated notice, staffing, discipline, transfer, community and postsecondary sections cite their separate TEA, Census or THECB publication in place. Every archived source carries checksums so each number stays traceable to the bytes the public agency served.
Download the full dataset · this campus's district
Single-file records are pre-built for district-level records only, so there is no per-campus CSV to
link here. Producing both formats for every entity would consume most of the 20,000-asset deployment limit before
pages and shared data are counted. This campus is a row
in the bulk files on the download page, keyed by its TEA id 108802101.