- Enrollment
- 3,266
- Students per teacher
- 17:1
- Resource Index
- 52/100
Other / mixed grade configuration · Rockville, MD
Twinbrook Elementary
Federal NCES profile for Twinbrook Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 45/100.
2024-25 NCES dataOther / mixed grade configurationNCES 240048000939
👥 S:T ratio 60
🌟 Gifted program 70
🎓 Counselors 39
📋 Attendance 11
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Twinbrook Elementary earns 45/100 on the Resource Investment Index, with class sizes smaller than 93% of Maryland schools.
- #6 of 14
- schools in Rockville · Resource Index
- 45
- Resource Index · Typical
- 10:1
- small classes for Maryland
- 64.0%
- free-lunch eligible
Twinbrook Elementary has class sizes smaller than 93% of Maryland schools. Computed live against every Maryland school reporting to NCES.
By Resource Investment Index, Twinbrook Elementary ranks #6 of 14 schools in Rockville, MD.
School address
District: Montgomery County Public Schools · Maryland
NCES ID 240048000939 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-28 students YoY
Twinbrook Elementary shrank from 489 students in 2022-23 to 461 in 2023-24 (-5.7%).
Teacher FTE lost 46.0 → 40.6 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Shrinking CCD campus
-28 students YoY 240048000939 · Rockville, MD Other · SMALL · TRAD
459 enr · 10:1 · 64.0% lunch · RII 45
Nearest enrollment peer: Montgomery Blair High (3,266 students)
Twinbrook Elementary shrank from 489 students in 2022-23 to 461 in 2023-24 (-5.7%). Teacher FTE lost 46.0 → 40.6 across the same CCD years. Read with this school → · District book → · Maryland schools → · Find another →
Twinbrook 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 459
Twinbrook Elementary
459 students
What this shows Twinbrook Elementary reports 459 students on the CCD universe file.
How Twinbrook Elementary compares
Twinbrook Elementary is a shrinking campus on CCD: ratios and free-lunch share vs Maryland and U.S. means.
| Metric | This school | vs Maryland | Maryland avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 10:1 | ▼ 31% | 14.5:1 | 15.7:1 |
| Free-lunch eligible | 64.0% | ▲ 31% | 49.0% | 51.7% |
| Enrollment | 459 | top 62% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10:1
Leaner classes than 89% of US schools, among the more generously staffed nationally.
459
Bigger than 56% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
64.0%
free-lunch eligible
- 31% above the Maryland average of 49.0%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
10:1
students per teacher
- 31% below state mean
Top 7% in Maryland - lower ratio than 93% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
35.7%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
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
Counselors1.5 FTE
Per 306 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
Hispanic or Latino 62.7%
African American 13.1%
Asian 10.3%
White 9.4%
Two or More 4.6%
Largest group: Hispanic or Latino at 62.7% of enrollment.
Student-body diversity index 56.8/100
Simpson diversity index - at 56.8, Twinbrook 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 Twinbrook Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Montgomery Blair High | Larger | Lower economic need | Higher S:T ratio |
| Walter Johnson High | Larger | Lower economic need | Higher S:T ratio |
| Wheaton High | Larger | Similar economic need | Higher S:T ratio |
| Gaithersburg High | Larger | Similar economic need | Higher S:T ratio |
| Seneca Valley High | Larger | Lower economic need | Higher S:T ratio |
Comparisons are relative to Twinbrook 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 Rockville
6 comparable other schools (grades Mixed) serving the same city.
Bayard Rustin Elementary
Standard public school
757 students 15.1:1 students per teacher
Luxmanor Elementary
Standard public school
684 students 13.7:1 students per teacher
Lucy V. Barnsley Elementary
Standard public school
621 students 12.4:1 students per teacher
Maryvale Elementary
Standard public school
617 students 13.1:1 students per teacher
Wheaton Woods Elementary
Standard public school
556 students 10.7:1 students per teacher
Mill Creek Towne Elementary
Standard public school
528 students 13.9:1 students per teacher
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 (~459 students)
Frequently asked questions about Twinbrook Elementary
How many students attend Twinbrook Elementary?
Twinbrook Elementary has 459 students enrolled. It is a public school in Rockville, MD. CCD year-over-year: 489 (2022-23) → 461 (2023-24), down 28.
What is the student-teacher ratio at Twinbrook Elementary?
The student-teacher ratio at Twinbrook Elementary is 10:1, which is 31% lower than the Maryland average of 14.5:1 and 36% 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 Twinbrook Elementary?
64.0% of students at Twinbrook Elementary are eligible for free lunch, compared to the Maryland average of 49.0%.
What is the racial and ethnic makeup of Twinbrook Elementary?
The largest demographic group at Twinbrook Elementary is Hispanic or Latino at 62.7% of enrollment, in Rockville, MD. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 56.8/100.
What is the Resource Investment Index for Twinbrook Elementary?
Twinbrook Elementary has a Resource Investment Index of 45/100 (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).
How does Twinbrook Elementary rank among schools in Rockville?
By Resource Investment Index, Twinbrook Elementary ranks #6 of 14 schools in Rockville, MD. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Rockville on the city page.
What other schools are in Montgomery County Public Schools?
Besides Twinbrook 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.