- Enrollment
- 3,266
- Students per teacher
- 17:1
- Resource Index
- 52/100
Other / mixed grade configuration · North Potomac, MD
Stone Mill Elementary
Federal NCES profile for Stone Mill Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 48/100.
2024-25 NCES dataOther / mixed grade configurationNCES 240048001513
👥 S:T ratio 44
🌟 Gifted program 70
🎓 Counselors 0
📋 Attendance 77
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Stone Mill Elementary earns 48/100 on the Resource Investment Index, with class sizes near the Maryland median.
- 48
- Resource Index · Typical
- 13.9:1
- students per teacher
- 13.8%
- free-lunch eligible
- 516
- students enrolled
Stone Mill Elementary has class sizes near the Maryland median. Computed live against every Maryland school reporting to NCES.
School address
District: Montgomery County Public Schools · Maryland
NCES ID 240048001513 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-16 students YoY
Stone Mill Elementary held near 534 students from 2022-23 to 2023-24 (-16 headcount).
Teacher FTE lost 37.8 → 36.6 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-16 students YoY 240048001513 · North Potomac, MD Other · MID · TRAD
516 enr · 13.9:1 · 13.8% lunch · RII 48
Nearest enrollment peer: Montgomery Blair High (3,266 students)
Stone Mill Elementary held near 534 students from 2022-23 to 2023-24 (-16 headcount). Teacher FTE lost 37.8 → 36.6 across the same CCD years. Read with this school → · District book → · Maryland schools → · Find another →
Stone Mill Elementary in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Montgomery Bla
Montgomery Blair High
3,266 students
- Walter Johnson
Walter Johnson High
3,016 students
- Wheaton High
Wheaton High
2,794 students
- Gaithersburg H
Gaithersburg High
2,441 students
- Seneca Valley
Seneca Valley High
2,409 students
- This school 516
Stone Mill Elementary
516 students
What this shows Stone Mill Elementary reports 516 students on the CCD universe file.
How Stone Mill Elementary compares
Stone Mill Elementary held steady on CCD headcount: ratios and free-lunch share vs Maryland and U.S. means.
| Metric | This school | vs Maryland | Maryland avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 13.9:1 | ▼ 4% | 14.5:1 | 15.7:1 |
| Free-lunch eligible | 13.8% | ▼ 72% | 49.0% | 51.7% |
| Enrollment | 516 | top 52% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13.9:1
Leaner classes than 58% of US schools, a middle-of-the-pack class size.
516
Bigger than 64% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
13.8%
free-lunch eligible
- 72% below the Maryland average of 49.0%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
13.9:1
students per teacher
- 4% below state mean
Top 42% in Maryland - lower ratio than 58% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
9.1%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$19,456
per pupil, district-wide
- above Maryland avg of $18,753
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors1.0 FTE
Per 516 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
Asian 46.4%
White 22.5%
Hispanic or Latino 12.2%
African American 10.7%
Two or More 7.8%
American Indian / Alaska Native 0.4%
Largest group: Asian at 46.4% of enrollment.
Student-body diversity index 70.2/100
Simpson diversity index - at 70.2, Stone Mill Elementary is more mixed than the Maryland school average of 52.3.
Programs
Gifted & talented Yes
District finance for Montgomery County Public Schools reports $19,456 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Stone Mill Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Montgomery Blair High | Larger | Higher economic need | Higher S:T ratio |
| Walter Johnson High | Larger | Similar economic need | Higher S:T ratio |
| Wheaton High | Larger | Higher economic need | Higher S:T ratio |
| Gaithersburg High | Larger | Higher economic need | Similar S:T ratio |
| Seneca Valley High | Larger | Higher economic need | Higher S:T ratio |
Comparisons are relative to Stone Mill Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 3,016
- Students per teacher
- 19.1:1
- Resource Index
- 51/100
- Enrollment
- 2,794
- Students per teacher
- 17.8:1
- Resource Index
- 43/100
- Enrollment
- 2,441
- Students per teacher
- 14.4:1
- Resource Index
- 56/100
- Enrollment
- 2,409
- Students per teacher
- 15.6:1
- Resource Index
- 41/100
Similar other schools in North Potomac
1 comparable other schools (grades Mixed) serving the same city.
Nationwide other schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~516 students)
Frequently asked questions about Stone Mill Elementary
How many students attend Stone Mill Elementary?
Stone Mill Elementary has 516 students enrolled. It is a public school in North Potomac, MD. CCD year-over-year: 550 (2022-23) → 534 (2023-24), nearly flat (-16).
What is the student-teacher ratio at Stone Mill Elementary?
The student-teacher ratio at Stone Mill Elementary is 13.9:1, which is 4% lower than the Maryland average of 14.5:1 and 11% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Stone Mill Elementary?
13.8% of students at Stone Mill Elementary are eligible for free lunch, compared to the Maryland average of 49.0%.
What is the racial and ethnic makeup of Stone Mill Elementary?
The largest demographic group at Stone Mill Elementary is Asian at 46.4% of enrollment, in North Potomac, MD. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 70.2/100.
What is the Resource Investment Index for Stone Mill Elementary?
Stone Mill Elementary has a Resource Investment Index of 48/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
What other schools are in Montgomery County Public Schools?
Besides Stone Mill Elementary, Montgomery County Public Schools also operates Montgomery Blair High (3,266 students), Walter Johnson High (3,016 students), and Wheaton High (2,794 students). See the Montgomery County Public Schools district page for the complete list.