Enrollment
900
Georgia · 2024-25 NCES data
Other / mixed grade configuration · Stone Mountain, GA
Rockbridge Elementary School
Federal NCES profile for Rockbridge Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 27/100.
2024-25 NCES dataOther / mixed grade configurationNCES 130174000646
👥 S:T ratio 36
🌟 Gifted program 70
🎓 Counselors 0
📋 Attendance 4
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Rockbridge Elementary School earns 27/100 on the Resource Investment Index, with class sizes larger than 77% of Georgia schools.
- #13 of 14
- schools in Stone Mountain · Resource Index
- 27
- Resource Index · Lower
- 16.1:1
- large classes for Georgia
- 100.0%
- free-lunch eligible
Rockbridge Elementary School has class sizes larger than 77% of Georgia schools. Computed live against every Georgia school reporting to NCES.
By Resource Investment Index, Rockbridge Elementary School ranks #13 of 14 schools in Stone Mountain, GA.
School address
District: Dekalb County · Georgia
NCES ID 130174000646 Verify on NCES CCD record →
Teachers (FTE)
56.0
Federal CCD staff survey
Students per teacher
16.1:1
vs 14.4:1 Georgia avg
+12% vs state
Free-lunch eligible
100.0%
vs 60.7% Georgia avg
+65% vs state
Student-teacher ratio in context
How Rockbridge Elementary School compares with Georgia and U.S. medians
What stands out at Rockbridge Elementary School
Rockbridge Elementary School is a high-poverty, mid-sized combined-grade school in Stone Mountain, Georgia, enrolling 900 students.
Class loads run somewhat heavier than typical: 16.1:1 puts it in the larger third of Georgia schools by student-teacher ratio.
Economic need is high: 100.0% of students qualify for free meals, 65% above the Georgia average, a Title I-weighted population that federal funding formulas prioritise.
Enrollment of 900 puts it in the larger third of Georgia schools by headcount.
Its Resource Investment Index trails 97% of the 2,314 Georgia schools with a score on record, one of the lower results on this measure.
Among 299 similarly sized, similarly resourced-need Georgia schools statewide, it ranks #271, in the lower tier once campus size and economic need are matched.
Its student body is led by African American (70%) and Hispanic or Latino (15%) (diversity index 48/100).
Counselor access is stretched at roughly 900 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 38.4% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Its district draws 15.7% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Stone Mountain's public schools, it stands alongside Allgood Elementary School (614 students): Rockbridge Elementary School is larger than that campus by headcount and runs leaner classes (16.1:1 vs 17.5:1).
Dekalb County also operates Lakeside High School (2,234 students) and Dunwoody High School (2,012 students) alongside Rockbridge Elementary School.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Rockbridge Elementary School compares
Rockbridge Elementary School on the metrics families compare, against Georgia and U.S. means.
| Metric | This school | vs Georgia | Georgia avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 16.1:1 | ▲ 12% | 14.4:1 | 15.7:1 |
| Free-lunch eligible | 100.0% | ▲ 65% | 60.7% | 51.7% |
| Enrollment | 900 | top 24% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.1:1
Leaner classes than 37% of US schools, a middle-of-the-pack class size.
900
Bigger than 89% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
100.0%
free-lunch eligible
- 65% above the Georgia average of 60.7%
Well above the 40% Title I schoolwide threshold, among the highest-need profiles in the state; federal funds support the whole school, not individual students.
Staffing depth
16.1:1
students per teacher
- 12% above state mean
Top 77% in Georgia - lower ratio than 23% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
38.4%
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
$15,594
per pupil, district-wide
- above Georgia avg of $13,863
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors1.0 FTE
Per 900 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 7 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.8 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
African American 69.9%
Hispanic or Latino 14.7%
Asian 10.0%
White 2.6%
Two or More 2.3%
American Indian / Alaska Native 0.6%
Largest group: African American at 69.9% of enrollment.
Student-body diversity index 47.9/100
Simpson diversity index - at 47.9, Rockbridge Elementary School is less mixed than the Georgia school average of 50.0.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Dekalb County, which includes Rockbridge Elementary School.
$15,594
Per student
+12%
vs Georgia
Avg $13,863
-6%
vs U.S.
Avg $16,593
Revenue mix
Local 51.6%
State 32.7%
Federal 15.7%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Rockbridge Elementary School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Lakeside High School | Larger | Lower economic need | Higher S:T ratio |
| Dunwoody High School | Larger | Lower economic need | Similar S:T ratio |
| Chamblee High School | Larger | Lower economic need | Similar S:T ratio |
| Cross Keys High School | Larger | Lower economic need | Similar S:T ratio |
| Sequoyah Middle School | Larger | Similar economic need | Similar S:T ratio |
Comparisons are relative to Rockbridge Elementary School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,234
- Students per teacher
- 18.2:1
- Resource Index
- 39/100
- Enrollment
- 2,012
- Students per teacher
- 17.1:1
- Resource Index
- 31/100
- Enrollment
- 1,867
- Students per teacher
- 17.3:1
- Resource Index
- 44/100
- Enrollment
- 1,748
- Students per teacher
- 17:1
- Resource Index
- 36/100
- Enrollment
- 1,713
- Students per teacher
- 15.3:1
- Resource Index
- 32/100
Similar other schools in Stone Mountain
6 comparable other schools (grades Mixed) serving the same city.
Allgood Elementary School
Standard public school
614 students 17.5:1 students per teacher
Stone Mill Elementary School
Standard public school
601 students 17.2:1 students per teacher
Pine Ridge Elementary School
Standard public school
551 students 12.2:1 students per teacher
Wynbrooke Elementary School
Standard public school
546 students 14:1 students per teacher
Smoke Rise Elementary School
Standard public school
539 students 14.6:1 students per teacher
Hambrick Elementary School
Standard public school
536 students 14.5:1 students per teacher
Similar other schools statewide
Matched by enrollment size and by staffing ratio across all of Georgia, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~900 students)
Similar student-teacher ratio (~16.1:1)
Next steps
Verify locally before acting on Rockbridge Elementary School's federal record.
- Compare Rockbridge Elementary School against another school. Compare schools
- Dekalb County's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Rockbridge Elementary School
How many students attend Rockbridge Elementary School?
Rockbridge Elementary School has 900 students enrolled. It is a public school in Stone Mountain, GA.
What is the student-teacher ratio at Rockbridge Elementary School?
The student-teacher ratio at Rockbridge Elementary School is 16.1:1, which is 12% higher than the Georgia average of 14.4:1 and 3% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Rockbridge Elementary School?
100.0% of students at Rockbridge Elementary School are eligible for free lunch, compared to the Georgia average of 60.7%.
What is the racial and ethnic makeup of Rockbridge Elementary School?
The largest demographic group at Rockbridge Elementary School is African American at 69.9% of enrollment, in Stone Mountain, GA.
What is the Resource Investment Index for Rockbridge Elementary School?
Rockbridge Elementary School has a Resource Investment Index of 27/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Rockbridge Elementary School rank among schools in Stone Mountain?
By Resource Investment Index, Rockbridge Elementary School ranks #13 of 14 schools in Stone Mountain, GA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Stone Mountain on the city page.
Is Rockbridge Elementary School a good school?
Rockbridge Elementary School earns 27/100 on the Resource Investment Index, with class sizes larger than 77% of Georgia schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Dekalb County?
Besides Rockbridge Elementary School, Dekalb County also operates Lakeside High School (2,234 students), Dunwoody High School (2,012 students), and Chamblee High School (1,867 students). See the Dekalb County district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.