Montgomery Blair High
Downcounty Consortium cluster · 51 University Blvd East, 20901
School website ↗·PTSA/PTO information ↗
Academics
MCAP proficiency over time.
Data table
| Series | 2019 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|---|---|
| ELA | 53% | 61.3% | 57.4% | 51.3% | 56% | 65% | 73% |
| Math | 6.4% | ≤5% | ≤5% | 6.6% | 5.3% | 10.4% | 7.9% |
| Science | 57.7% | 53.2% | 38.3% | 38% | 49.2% | 55% | — |
Testing paused in 2020. A dashed line in a shaded band means the exact value is suppressed for privacy — it is ≤5%. Science scoring changed twice (2019 pre-MCAP scale; 2021 three bands, two pooled administrations; four bands from 2022), so science points before 2022 aren't comparable to later ones. Science swung sharply statewide between 2023 and 2026 (down, then back up, one grade at a time); those moves likely reflect the state assessment, not school-level change. High-school science isn’t published for 2026 yet. 2019 math reflects the larger PARCC-era Algebra 1 testing population and isn't comparable to later years.
Class size
Average class size by grade band over recent years, with the latest year measured against MCPS's published guideline.
Data table
| Series | 2017-2018 | 2018-2019 | 2019-2020 | 2020-2021 | 2021-2022 | 2022-2023 | 2023-2024 | 2024-2025 |
|---|---|---|---|---|---|---|---|---|
| English | 20.3 * | 18.3 * | 20.6 * | 20.2 * | 21.0 * | 20.6 * | 21.6 | 20.5 |
| Other | 21.1 * | 16.9 * | 21.5 * | 21.1 * | 21.2 * | 21.0 * | 22.3 | 21.9 |
- English20.5target 30 · within guideline
- Other21.9target 33 · within guideline
Source: MCPS School Profiles class-size extract vs. MCPS published class-size guidelines · Updated: 2024-2025
Proficiency by student group
This school's MCAP ELA proficiency by group (latest year). The spread is the opportunity gap.
8 groups not shown — too few students to report (withheld for privacy, not zero).
Special education
Data table
| Series | 2023 | 2024 | 2025 |
|---|---|---|---|
| Inclusion % | 80.1% | 78.4% | 77.8% |
Time in general education (2025): 80%+ of the day 77.8% · 40–79% 22.2% · under 40% ≤5%
Staffing rates are per 100 students with IEPs; staffing is from 2025. Withheld values reflect privacy suppression, not zero.
Source: MCPS School Profiles / unified facts (LRE, staffing, SWD enrollment) · Updated: inclusion 2025, staffing 2025
Staffing
Staff relative to enrollment. The chip compares this school to the typical high school at this level.
Special education & multilingual support
Source: MCPS unified facts — staff FTE per student (support services = instructional support staff)
Programs & services
Special, choice, and support programs offered at this school — from magnet and application programs to career pathways and special-education services.
Magnet - Application
Local - Application
Academics - Choice
Academics
CTE
Student Support
Special Education
Source: MCPS Office of Student Affairs program catalog (2025). Find schools by program →
Students
Data table
| Series | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|---|
| Enrollment | 3,220 | 3,176 | 3,204 | 3,261 | 3,266 | 3,196 |
By race / ethnicity (2026).
Climate
Attendance and chronic absenteeism (absent 10%+ of days).
Data table
| Series | 2019 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Attendance | 90.4% | 93.9% | 94.8% | 88.9% | 88.7% | 90% |
| Chronic absenteeism | 28% | 18.7% | 33.7% | 36.5% | 35.6% | 33.7% |
Enrollment & capacity outlook
A ten-year probabilistic enrollment forecast for this school, checked against its capacity. Part of the countywide capacity outlook, which explains the method and its track record.
Data table
| School year | Actual | Forecast (p10–p90) | MCPS projection |
|---|---|---|---|
| 2017–18 | 3083 | — | — |
| 2018–19 | 3196 | — | — |
| 2019–20 | 3223 | — | — |
| 2020–21 | 3220 | — | — |
| 2021–22 | 3176 | — | — |
| 2022–23 | 3204 | — | — |
| 2023–24 | 3260 | — | — |
| 2024–25 | 3266 | — | — |
| 2025–26 | 3196 | — | — |
| 2026–27 | — | 3122 (2928–3322) | 3097 |
| 2027–28 | — | 3006 (2711–3291) | 3046 |
| 2028–29 | — | 2926 (2564–3308) | 3102 |
| 2029–30 | — | 2955 (2513–3427) | 3119 |
| 2030–31 | — | 2958 (2444–3531) | 3098 |
| 2031–32 | — | 2945 (2375–3626) | — |
| 2032–33 | — | 2949 (2317–3777) | — |
| 2033–34 | — | 2895 (2214–3839) | — |
| 2034–35 | — | 2835 (2105–3836) | — |
| 2035–36 | — | 2801 (2018–3915) | — |
- Includes the board-adopted boundary change effective SY 2027–28: this school is projected to lose about 39 resident students then. Earlier years use current boundaries.
- This school enrolls roughly 575 more students than its own attendance area produces — it hosts a countywide or regional program (such as a magnet). Boundary studies count only resident students and so understate it; this forecast counts everyone in the building.
Source: mc-development forecast model — base year SY 2025–26; boundaries 2024-2025; development snapshot 2026-06-02 · Updated: 2026-07-31T00:00:00Z
Data: MSDE State Report Card (2019–2026), MCPS official Sept 30, 2025 enrollment count (extends the enrollment trend to 2025-26), MCPS School Profiles & unified facts, U.S. Census ACS 2024, MD SDAT. “≥95” / “≤5” and dropped groups are privacy-suppressed for small counts — withheld, not zero. Independent project, not affiliated with MCPS or MSDE.