- Enrollment
- 3,085
- Students per teacher
- 18.8:1
- Resource Index
- 37/100
Other / mixed grade configuration · Marietta, GA
Blackwell Elementary School
Federal NCES profile for Blackwell Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 45/100.
2024-25 NCES dataOther / mixed grade configurationNCES 130129002249
👥 S:T ratio 56
🌟 Gifted program 70
🎓 Counselors 42
📋 Attendance 13
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Blackwell Elementary School earns 45/100 on the Resource Investment Index, with class sizes smaller than 90% of Georgia schools. It is also more racially and ethnically mixed than most Georgia schools.
- #21 of 30
- schools in Marietta · Resource Index
- 45
- Resource Index · Typical
- 10.9:1
- small classes for Georgia
- 30.2%
- free-lunch eligible
Blackwell Elementary School has class sizes smaller than 90% of Georgia schools. Computed live against every Georgia school reporting to NCES.
By Resource Investment Index, Blackwell Elementary School ranks #21 of 30 schools in Marietta, GA.
School address
CCD year-over-year · 2022-23 → 2023-24
-49 students YoY
Blackwell Elementary School shrank from 632 students in 2022-23 to 583 in 2023-24 (-7.8%).
Teacher FTE lost 53.4 → 51.6 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Shrinking CCD campus
-49 students YoY 130129002249 · Marietta, GA Other · MID · TRAD
580 enr · 10.9:1 · 30.2% lunch · RII 45
Nearest enrollment peer: Campbell High School (3,085 students)
Blackwell Elementary School shrank from 632 students in 2022-23 to 583 in 2023-24 (-7.8%). Teacher FTE lost 53.4 → 51.6 across the same CCD years. Read with this school → · District book → · Georgia schools → · Find another →
Blackwell Elementary School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Campbell High
Campbell High School
3,085 students
- Osborne High S
Osborne High School
2,790 students
- Walton High Sc
Walton High School
2,705 students
- Pebblebrook Hi
Pebblebrook High School
2,574 students
- North Cobb Hig
North Cobb High School
2,463 students
- This school 580
Blackwell Elementary School
580 students
What this shows Blackwell Elementary School reports 580 students on the CCD universe file.
How Blackwell Elementary School compares
Blackwell Elementary School is a shrinking campus on CCD: ratios and free-lunch share vs Georgia and U.S. means.
| Metric | This school | vs Georgia | Georgia avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 10.9:1 | ▼ 24% | 14.4:1 | 15.7:1 |
| Free-lunch eligible | 30.2% | ▼ 50% | 60.7% | 51.7% |
| Enrollment | 580 | top 57% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10.9:1
Leaner classes than 84% of US schools, among the more generously staffed nationally.
580
Bigger than 71% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
30.2%
free-lunch eligible
- 50% below the Georgia average of 60.7%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
10.9:1
students per teacher
- 24% below state mean
Top 10% in Georgia - lower ratio than 90% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
34.7%
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
$14,680
per pupil, district-wide
- above Georgia avg of $14,615
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors2.0 FTE
Per 290 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 13 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 2.2 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 42.6%
Hispanic or Latino 25.3%
African American 15.5%
Two or More 9.5%
Asian 6.4%
American Indian / Alaska Native 0.3%
Native Hawaiian / Pacific Islander 0.3%
Largest group: White at 42.6% of enrollment.
Student-body diversity index 71.7/100
Simpson diversity index - at 71.7, Blackwell Elementary School is more mixed than the Georgia school average of 50.0.
Programs
Gifted & talented Yes
District finance for Cobb County reports $14,680 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Blackwell Elementary School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Campbell High School | Larger | Higher economic need | Higher S:T ratio |
| Osborne High School | Larger | Higher economic need | Higher S:T ratio |
| Walton High School | Larger | Lower economic need | Higher S:T ratio |
| Pebblebrook High School | Larger | Higher economic need | Higher S:T ratio |
| North Cobb High School | Larger | Similar economic need | Higher S:T ratio |
Comparisons are relative to Blackwell Elementary School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,790
- Students per teacher
- 17:1
- Resource Index
- 44/100
- Enrollment
- 2,705
- Students per teacher
- 19.7:1
- Resource Index
- 43/100
- Enrollment
- 2,574
- Students per teacher
- 17.8:1
- Resource Index
- 38/100
- Enrollment
- 2,463
- Students per teacher
- 17.5:1
- Resource Index
- 39/100
Similar other schools in Marietta
6 comparable other schools (grades Mixed) serving the same city.
Sope Creek Elementary School
Standard public school
1,104 students 15.3:1 students per teacher
East Side Elementary School
Standard public school
1,072 students 13.9:1 students per teacher
Cheatham Hill Elementary School
Standard public school
1,021 students 13.4:1 students per teacher
Brumby Elementary School
Standard public school
963 students 12.3:1 students per teacher
Mount Bethel Elementary School
Standard public school
898 students 13.2:1 students per teacher
Dowell Elementary School
Standard public school
898 students 13:1 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 (~580 students)
Frequently asked questions about Blackwell Elementary School
How many students attend Blackwell Elementary School?
Blackwell Elementary School has 580 students enrolled. It is a public school in Marietta, GA. CCD year-over-year: 632 (2022-23) → 583 (2023-24), down 49.
What is the student-teacher ratio at Blackwell Elementary School?
The student-teacher ratio at Blackwell Elementary School is 10.9:1, which is 24% lower than the Georgia average of 14.4:1 and 31% 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 Blackwell Elementary School?
30.2% of students at Blackwell Elementary School are eligible for free lunch, compared to the Georgia average of 60.7%.
What is the racial and ethnic makeup of Blackwell Elementary School?
The largest demographic group at Blackwell Elementary School is White at 42.6% of enrollment, in Marietta, GA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 71.7/100.
What is the Resource Investment Index for Blackwell Elementary School?
Blackwell Elementary School 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 Blackwell Elementary School rank among schools in Marietta?
By Resource Investment Index, Blackwell Elementary School ranks #21 of 30 schools in Marietta, GA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Marietta on the city page.
What other schools are in Cobb County?
Besides Blackwell Elementary School, Cobb County also operates Campbell High School (3,085 students), Osborne High School (2,790 students), and Walton High School (2,705 students). See the Cobb County district page for the complete list.