East Cobb Middle School, 825 Terrell Mill Road, Marietta: grades 6-8, 1,513 students in 2025, CCRPI 74.0. Zone, report card and bell times.
Last checked Oct. 6, 2026. Sources: the East Cobb Middle website, the Cobb County School District’s attendance zones, feeder pattern chart, bell schedule and 2026-27 calendar, the Governor’s Office of Student Achievement’s 2025 School Grades data and the federal NCES school directory.
East Cobb Middle School is a Cobb County School District middle school for sixth through eighth grade on Terrell Mill Road in East Cobb, next door to Brumby Elementary. The school’s about page says it opened in 1963 and that the same five elementary schools, Brumby, Eastvalley, Powers Ferry, Sedalia Park and Sope Creek, still send it their students. Its mailing address says Marietta, but the address sits outside any city’s limits, in unincorporated Cobb County, according to the Census Bureau’s geocoder.
- Address: 825 Terrell Mill Road, Marietta, GA 30067
- Phone: 770-578-2740
- Grades: 6 to 8
- Website: cobbk12.org/eastcobb
Who to call
- East Cobb Middle front office: 770-578-2740
- Enroll a student: the district’s enrollment page; families who need an interpreter can call the International Welcome Center at 678-331-3086
- Bus routes and transportation: the district’s Transportation Department, 678-594-8000, and its bus route finder
- Cobb County School District main line: 770-426-3300
- Is this your school? Enter an address in the school and bus locator
Principal
Principal Mitchell Askew, according to the school’s website.
Enrollment and teachers
The state counted 1,513 students at East Cobb Middle in its 2025 School Grades data, against 1,575 in 2024. The most recent federal figure, from the NCES directory for the 2023-24 school year, is 1,345 students and 83 full-time-equivalent teachers, about 16.2 students per teacher.
State report card
East Cobb Middle’s 2025 CCRPI single score was 74.0, according to the state’s School Grades data. The Georgia average for middle schools was 78.4 and the Cobb County School District’s was 80.2. The school scored 78.9 in 2023 and 67.8 in 2024. Scores can move a lot from one year to the next at a single school. The full report card, with subgroups and the parts of the score, is on the state’s East Cobb Middle report card.
CCRPI is the Georgia Department of Education’s “comprehensive school improvement, accountability, and communication platform,” according to GaDOE. The single score runs from 0 to 100 and is built from content mastery, progress, closing gaps and readiness, plus graduation rate for high schools. Georgia does not publish an A-to-F letter grade for schools in its 2025 data.
Georgia Milestones end-of-grade tests, 2025, share of tested students scoring Proficient and Distinguished, the two upper achievement levels:
| Subject | Proficient | Distinguished |
|---|---|---|
| English language arts | 26.4% | 11.2% |
| Math | 23.4% | 13.9% |
| Science | 25.3% | 12.8% |
| Social studies | 23.7% | 6.8% |
The same data put 46% of eighth graders reading at or above grade level.
Attendance zone
Zones are set by the district and do not follow ZIP codes. Check any address with the district’s school and bus locator, or open the district’s East Cobb zone map (PDF) from its attendance zones page. The district says its posted maps “do not preclude any future changes” and asks families not to make a home purchase based on them alone.
The district’s feeder pattern chart, updated June 30, 2024, lists these elementary school zones feeding East Cobb Middle: Brumby Elementary, Eastvalley Elementary, Powers Ferry Elementary, Sedalia Park Elementary (80% of its zone) and Sope Creek Elementary (30% of its zone). The whole East Cobb zone goes on to Wheeler High.
We found no rezoning approved by the Board of Education that changes the East Cobb zone for 2026-27; the district’s posted zone maps are labeled 2022-23 for high schools and 2023-24 for middle and elementary schools.
Calendar and bell times
The district’s 2026-27 bell schedule (PDF) has East Cobb Middle starting at 9:15 a.m. and dismissing at 4:15 p.m. (all Cobb middle schools keep the same hours).
From the district’s 2026-27 calendar (PDF):
- Monday, Oct. 12: digital learning day
- Tuesday, Oct. 13, to Friday, Oct. 16: conference week, early release for elementary and middle schools only
- Tuesday, Nov. 3: Election Day, student holiday
- Nov. 23-27: Thanksgiving break
- Thursday, Dec. 17, and Friday, Dec. 18: early release, all schools
- Dec. 21 to Jan. 1: winter break; Monday, Jan. 4, is a student holiday
- Wednesday, May 19, 2027: last day of school
More
- The school’s website
- The state’s report card for East Cobb Middle
- Every public school in East Cobb, with zones and scores: our East Cobb public schools guide
- District calendar, registration and the Board of Education: our East Cobb schools guide
Frequently asked questions
What grades does East Cobb Middle serve?
Sixth through eighth grade. The state counted 1,513 students in 2025.
What is East Cobb Middle’s CCRPI score?
74.0 in 2025, according to the state’s School Grades data, against a Georgia middle school average of 78.4 and a Cobb County School District average of 80.2.
Which high school does East Cobb Middle feed into?
Wheeler High, according to the district’s feeder pattern chart.
What time does East Cobb Middle start?
The district’s 2026-27 bell schedule has East Cobb Middle starting at 9:15 a.m. and dismissing at 4:15 p.m.
Who is the principal of East Cobb Middle?
Mitchell Askew, according to the school’s website on Oct. 6, 2026.
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