Odessa Shannon Middle
Downcounty Consortium cluster · 11800 Monticello Ave, 20902
School website ↗·Odessa Shannon MS PTSA ↗
Academics
MCAP proficiency over time.
Data table
| Series | 2019 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|---|---|
| ELA | 32.3% | 25.6% | 26.4% | 27.7% | 31.8% | 29.5% | 32% |
| Math | 17.7% | 11.3% | 8.5% | 6.7% | 9.5% | 8.2% | 9.9% |
| Science | 26.1% | 19.6% | 19.2% | 11.9% | 13.9% | 16.5% | 11.6% |
Testing paused in 2020. 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.
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 | 15.7 * | 14.6 * | 15.3 * | 14.8 * | 13.1 * | 13.0 * | 24.4 | 21.8 |
| Other | 16.3 * | 12.3 * | 13.6 * | 14.8 * | 14.3 * | 15.3 * | 21.9 | 20.4 |
- English21.8target 30 · within guideline
- Other20.4target 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.
3 groups not shown — too few students to report (withheld for privacy, not zero).
Special education
Data table
| Series | 2023 | 2024 | 2025 |
|---|---|---|---|
| Inclusion % | 57.7% | 63.9% | 71.8% |
Time in general education (2025): 80%+ of the day 71.8% · 40–79% 18.6% · under 40% 9.7%
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 middle 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.
Academics - Continuation
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 | 795 | 760 | 823 | 771 | 784 | 766 |
By race / ethnicity (2026).
Climate
Attendance and chronic absenteeism (absent 10%+ of days).
Data table
| Series | 2019 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Attendance | 94.1% | 91.3% | 94.8% | 94.3% | 92.7% | 92.9% |
| Chronic absenteeism | 20.7% | 26.6% | 32% | 17.8% | 22.9% | 24.1% |
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 | 757 | — | — |
| 2018–19 | 760 | — | — |
| 2019–20 | 771 | — | — |
| 2020–21 | 795 | — | — |
| 2021–22 | 760 | — | — |
| 2022–23 | 823 | — | — |
| 2023–24 | 771 | — | — |
| 2024–25 | 784 | — | — |
| 2025–26 | 766 | — | — |
| 2026–27 | — | 769 (720–821) | 744 |
| 2027–28 | — | 549 (494–611) | 733 |
| 2028–29 | — | 562 (488–654) | 725 |
| 2029–30 | — | 552 (466–663) | 701 |
| 2030–31 | — | 544 (446–677) | 685 |
| 2031–32 | — | 520 (410–666) | — |
| 2032–33 | — | 507 (386–670) | — |
| 2033–34 | — | 483 (358–655) | — |
| 2034–35 | — | 482 (345–672) | — |
| 2035–36 | — | 470 (330–676) | — |
- Includes the board-adopted boundary change effective SY 2027–28: this school is projected to lose about 245 resident students then. Earlier years use current boundaries.
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.