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If you had an hour of school board time for Blackwell Elementary School, what would you bring up?
Community prompt from u/allk12. Replies below.
Enrollment
580
Elementary
DISTRICT 691 · STATE 605
SCHOOL COMMUNITY·COBB COUNTY·NCES 130129002249
Blackwell Elementary School
3470 Canton Rd, Marietta, GA 30066 · (678) 494-7600 · Cobb County
GRADES PK–05ELEMENTARY21-SUBURBTITLE IREGULAR SCHOOL580 STUDENTS
C+
allk12 Grade
Scored higher than 43% of Georgia public elementary schools
- BTest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- C-Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- B+Three-year trend Change in reading and math proficiency over the last three test years.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Georgia public elementary schools
Student : Teacher
12.2:1
48 FTE teachers
DISTRICT 12.0:1 · STATE 13.3:1
Free / Reduced Lunch
54%
311 students
DISTRICT 56% · STATE 74%
Community
6
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Pre-K | 10 | 2% |
| Kindergarten | 82 | 14% |
| Grade 1 | 82 | 14% |
| Grade 2 | 94 | 16% |
| Grade 3 | 95 | 16% |
| Grade 4 | 103 | 18% |
| Grade 5 | 114 | 20% |
This year's kindergarten class (82) is 28% smaller than its 5th grade class (114).
Student demographics
72%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 73% · STATE 71% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
School pathway
Students here typically continue to
Based on published attendance-zone data from Cobb County. Zones change; confirm enrollment with the district.
Test scores
Georgia Milestones 2024-25 . % Proficient or DistinguishedEnglish Language Arts
40.7%
GA avg 40.1% . -0.3pp since 2021
Math
45.0%
GA avg 44.6% . +9.4pp since 2021
What this means: On the Georgia Milestones, Georgia's statewide test, about 41 of every 100 students at this school read and write at grade level and about 45 of 100 do math at grade level. Across all Georgia schools, those numbers are about 40 and 45. Reading and writing scores have held steady since 2021, while math scores are up about 9 points.
Georgia Milestones results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 40.7% | 45.0% |
| 2023-24 | 44.5% | 43.4% |
| 2022-23 | 38.7% | 36.6% |
| 2021-22 | 41.0% | 35.6% |
% Proficient or Distinguished, all students and all tested grades.
Source: Georgia Milestones. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
42.1%
composite math + reading, all grades
Predicted
49.6%
based on GA schools with similar FRL share
Beats by
-7.5pp
below demographic expectation
What this means: About 42% of students here test proficient in math and reading, compared with the roughly 50% typical for Georgia schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Georgia's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Blackwell Elementary School
Blackwell Elementary School's state test result (42.1% proficient) is higher than 2 of the 4 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Blackwell Elementary School this school | 580 | 53.6% | 42.1% |
| Lewis Elementary School Kennesaw | 550 | 55.3% | 50.8% |
| Bramlett Elementary School Auburn | 654 | 51.2% | 40.1% |
| Brookwood Elementary School Grovetown | 559 | 59.0% | 57.8% |
| Kennesaw Elementary School Kennesaw | 560 | 51.3% | N/A |
| Bethlehem Elementary School Bethlehem | 641 | 61.5% | 38.2% |
Matched among Georgia elementary schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Blackwell Elementary School ranks
Among elementary schools| Measure | This school | In Georgia | In Cobb County |
|---|---|---|---|
| State test proficiency ranked highest first | 42.1% | #505 of 1,208 | #42 of 72 |
| Math proficiency ranked highest first | 45.0% | #519 of 1,215 ▲ 14 | #39 of 72 ▲ 2 |
| Reading proficiency ranked highest first | 40.7% | #454 of 1,215 ▼ 34 | #39 of 72 ▲ 3 |
| 3-year test score change ranked biggest gain first | +4.6pp | #409 of 1,183 | #18 of 72 |
| Enrollment ranked largest first | 580 | #653 of 1,324 | #47 of 78 |
| Students per teacher ranked fewest first | 12.2:1 | #309 of 1,301 | #41 of 77 |
| Diversity index ranked most diverse first | 71.7% | #81 of 1,301 | #13 of 77 |
| Free and reduced lunch ranked highest share first | 53.6% | #1,008 of 1,312 | #40 of 78 |
| Enrollment change since 2017-18 ranked steepest decline first | -20.2% | #229 of 854 | #16 of 57 |
Ranked against other public elementary schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
580
-76 (-12%) vs 2020
-33% since 2000-01, when it was 872
Student : Teacher
12.2:1
was 12.4:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 580 | 47.6 | 12.2:1 | 54% (311) |
| 2023-24 | 583 | 51.6 | 11.3:1 | 55% (322) |
| 2022-23 | 632 | 53.4 | 11.8:1 | 39% (249) |
| 2020-21 | 656 | 53 | 12.4:1 | 41% (271) |
| 2017-18 | 727 | 52 | 14.0:1 | 37% (270) |
| 2015-16 | 707 | 53 | 13.3:1 | 42% (299) |
| 2010-11 | 710 | 56 | 12.7:1 | 43% (302) |
| 2000-01 | 872 | 60 | 14.5:1 | 17% (151) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Blackwell Elementary School.
Since 2017-18: students down 20% (727 to 580); teachers down 8% (52 to 47.6).
About Blackwell Elementary School
Blackwell Elementary School is an elementary school in Marietta, Georgia, and it is part of Cobb County. It serves 580 students in pre-K through 5.
Blackwell Elementary School is one school in a 110-school district, Cobb County, which enrolls 105,738 students.
At Blackwell Elementary School, the largest share of students is White, at 43%. Next come 25% Hispanic, 16% Black, 9% multiracial, and 6% Asian. The school's diversity index is 72%, meaning two students picked at random have a 72% chance of belonging to different racial or ethnic groups.
Teachers at the school number 47.6 full-time equivalents, and the ratio is 12.2:1. On average, elementary schools in Georgia have 13.3:1, compared with 12.2:1 here. The school's lunch program data list 54% of students as eligible for free or reduced-price meals. For comparison, public schools in Cobb County average 53%.
Measured against Georgia public elementary schools, Blackwell Elementary School receives a C+. The grade weighs proficiency most heavily, then how results compare with what the school's low-income share predicts, then the three-year change.
Blackwell Elementary School scores 42.1% on state tests, averaged across results. The predicted figure, based on its student poverty level, is 49.6%.
In the county around the school, Cobb County, the median household income is $102,738, about 51% of adults have at least a bachelor's degree, and roughly 6% of residents are in poverty. Cobb County is home to 129 public schools and about 116,609 public school students.
The nearest public school is Daniell Middle School, at about 1.1 miles. Inside a five-mile radius, there are at least 8 other public schools. Nearby schools with test data average 52.4% proficiency; Blackwell Elementary School posts 42.1%.
Blackwell Elementary School is in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more, a location NCES labels Suburb: Large.
2024-25 enrollment was 580, a 12% decrease from 656 in 2020-21.
Conversations here can range across enrollment questions, class placement, and PTA news. Reviews and ratings from people who know the school are welcome.
Cobb County at a glance
View full county profilePopulation
775,208
Census ACS
Median income
$102,738
Household, ACS
Bachelor's+
51%
Adults 25+
Poverty rate
6%
Below federal line
Schools in county
129
116,609 students
Quick facts
Related schools
Other schools in Cobb County
- Campbell High SchoolHigh · 3,085 students
- Osborne High SchoolHigh · 2,790 students
- Walton High SchoolHigh · 2,705 students
- Pebblebrook High SchoolHigh · 2,574 students
- North Cobb High SchoolHigh · 2,463 students
- Wheeler High SchoolHigh · 2,401 students
Other schools in Marietta
- Osborne High SchoolHigh · 2,790 students
- Walton High SchoolHigh · 2,705 students
- Marietta High SchoolHigh · 2,526 students
- Wheeler High SchoolHigh · 2,401 students
- Lassiter High SchoolHigh · 2,005 students
- Pope High SchoolHigh · 1,793 students
Other Blackwell Elementary schools
2 other US public schools in 3 states are named Blackwell Elementary. Blackwell Elementary School is the largest of the 3.
- Blackwell Elementary SchoolBlackwell, OK · 507 students
- Blackwell ElementaryRichmond, VA · 420 students
Nearby schools
- Daniell Middle School1.1 mi · 884
- McCleskey Middle School1.4 mi · 540
- Nicholson Elementary School1.6 mi · 413
- Bells Ferry Elementary School1.9 mi · 704
- Kell High School2.1 mi · 1,587
- Chalker Elementary School2.1 mi · 679
Frequently asked questions
About Blackwell Elementary SchoolWhat is the total enrollment at Blackwell Elementary School?
Blackwell Elementary School enrolls approximately 580 students in grades PK-05.
What grades does Blackwell Elementary School serve?
Blackwell Elementary School serves grades PK-05.
How many students per teacher at Blackwell Elementary School?
Approximately 12.2:1 students per teacher at Blackwell Elementary School.
What is the student diversity at Blackwell Elementary School?
Student demographics at Blackwell Elementary School are roughly 43% White, 25% Hispanic, 16% Black, 6% Asian, 9% Two or more.
What district is Blackwell Elementary School in?
Blackwell Elementary School is part of Cobb County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.