Harmony Hills Elementary
Downcounty Consortium cluster · 13407 Lydia St, 20906
School website ↗·Parent info ↗
Academics
MCAP proficiency over time.
Data table
| Series | 2019 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|---|---|
| ELA | 19.8% | 10.6% | 21% | 22.3% | 22.9% | 21.8% | 22.2% |
| Math | 18.9% | 7.7% | 14.3% | 14.7% | 14.5% | 19.9% | 19.2% |
| Science | ≤5% | 9.7% | 10% | 15.4% | 6.6% | 11.9% | 9.8% |
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.
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 | 15.1 * | 18.2 * | 17.5 * | 15.5 * | 18.3 * | 19.7 * | 15.5 | 16.4 |
| Grades 1 to 3 | 18.2 * | 18.1 * | 19.2 * | 18.7 * | 18.1 * | 18.4 * | 19.8 | 18.9 |
| Grades 4 to 5 | 24.6 * | 25.0 * | 24.3 * | 21.0 * | 20.3 * | 20.7 * | 20.4 | 20.6 |
- Kindergarten16.4target 25 · within guideline
- Grades 1 to 318.9target 26–27 · within guideline
- Grades 4 to 520.6target 29 · 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 % | — | — | — |
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 | 690 | 683 | 699 | 693 | 655 | 609 |
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% | 92.2% | 90.5% | 90.6% | 92.6% | 93.3% |
| Chronic absenteeism | 21.4% | 28.5% | 42.4% | 41.8% | 29.9% | 21.7% |
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 | 735 | — | — |
| 2018–19 | 716 | — | — |
| 2019–20 | 745 | — | — |
| 2020–21 | 690 | — | — |
| 2021–22 | 683 | — | — |
| 2022–23 | 699 | — | — |
| 2023–24 | 692 | — | — |
| 2024–25 | 655 | — | — |
| 2025–26 | 609 | — | — |
| 2026–27 | — | 608 (566–652) | 569 |
| 2027–28 | — | 583 (529–642) | 532 |
| 2028–29 | — | 559 (495–626) | 501 |
| 2029–30 | — | 538 (465–606) | 494 |
| 2030–31 | — | 534 (462–619) | 498 |
| 2031–32 | — | 537 (463–619) | — |
| 2032–33 | — | 532 (459–615) | — |
| 2033–34 | — | 531 (460–615) | — |
| 2034–35 | — | 529 (458–614) | — |
| 2035–36 | — | 528 (459–616) | — |
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.