Lake Seneca Elementary
Seneca Valley cluster · 13600 Wanegarden Dr, 20874
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Academics
MCAP proficiency over time.
Data table
| Series | 2019 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|---|---|
| ELA | 34% | 16.5% | 37.4% | 32.4% | 32.1% | 24.8% | 32.5% |
| Math | 35.5% | 18.4% | 19.8% | 21.6% | 22.1% | 19.2% | 23.8% |
| Science | 10.1% | 33.3% | 24.7% | 8.3% | 18.2% | 8.9% | 19.1% |
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 |
|---|---|---|---|---|---|---|---|---|
| Kindergarten | 16.8 * | 16.0 * | 18.3 * | 18.5 * | 18.8 * | 18.8 * | 13.5 | 15.3 |
| Grades 1 to 3 | 16.0 * | 19.2 * | 17.3 * | 16.6 * | 17.4 * | 17.9 * | 17.8 | 16.6 |
| Grades 4 to 5 | 24.8 * | 21.5 * | 24.8 * | 23.5 * | 22.3 * | 23.0 * | 16.8 | 24.2 |
- Kindergarten15.3target 19 · within guideline
- Grades 1 to 316.6target 19–25 · within guideline
- Grades 4 to 524.2target 27 · 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.
4 groups not shown — too few students to report (withheld for privacy, not zero).
Special education
Data table
| Series | 2023 | 2024 | 2025 |
|---|---|---|---|
| Inclusion % | 71% | 72.1% | 68.3% |
Time in general education (2025): 80%+ of the day ≥95% · 40–79% ≤5% · 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 elementary 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.
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 | 461 | 485 | 459 | 478 | 437 | 404 |
By race / ethnicity (2026).
Climate
Attendance and chronic absenteeism (absent 10%+ of days).
Data table
| Series | 2019 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Attendance | 93.7% | ≥ 95.0 | 91.8% | 90.6% | 91.7% | 92.5% |
| Chronic absenteeism | 22.5% | 17.6% | 35.4% | 38.9% | 33.9% | 26.3% |
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 | 545 | — | — |
| 2018–19 | 516 | — | — |
| 2019–20 | 510 | — | — |
| 2020–21 | 461 | — | — |
| 2021–22 | 485 | — | — |
| 2022–23 | 459 | — | — |
| 2023–24 | 477 | — | — |
| 2024–25 | 437 | — | — |
| 2025–26 | 404 | — | — |
| 2026–27 | — | 416 (380–454) | 375 |
| 2027–28 | — | 397 (354–443) | 361 |
| 2028–29 | — | 388 (338–443) | 363 |
| 2029–30 | — | 390 (335–452) | 362 |
| 2030–31 | — | 392 (331–456) | 357 |
| 2031–32 | — | 384 (329–452) | — |
| 2032–33 | — | 384 (329–446) | — |
| 2033–34 | — | 386 (327–451) | — |
| 2034–35 | — | 385 (325–450) | — |
| 2035–36 | — | 385 (326–448) | — |
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.