Kell High School

Kell High School is a medium-sized secondary school in Marietta, Georgia, part of Cobb County. The school caters to 1,587 students in grades 9 through 12. That puts it 42% bigger than the typical public school in Georgia, which averages around 1,120 students.

Cobb County comprises 110 schools with combined enrollment of 105,738 students; Kell High School is among them.

On the student-mix side, Kell High School logs that 43% of students identify as White, with the remaining enrollment distributed across several groups; the rest reads as 25% Black, 23% Hispanic, 6% multiracial, 3% Asian.

On the resource side, Staff filings list 92 full-time-equivalent teachers, which works out to roughly 17.2:1 students per teacher. The state averages around 15.2:1, so this campus is higher than the state norm typical. About 43% of enrolled students meet the income threshold for free or reduced-price lunch, a commonly cited indicator of low-income enrollment. Set against Cobb County (around 53%), the school's rate is south of typical.

On a demographically-adjusted basis, Kell High School tracks the demographic baseline. The model predicts 55.0% given the school's FRL share; actual proficiency is 67.3%.

In the area at large, the surrounding county (Cobb County) records that the typical household earns roughly $102,738 per year, 51% of adults hold a bachelor's degree or higher, and the poverty rate sits near 6%. In all, Cobb County runs 129 public schools (combined enrollment of about 116,609 students), of which Kell High School is one.

Nicholson Elementary School is the nearest neighboring public school, about 1.0 miles from this campus. Counting just inside five miles, 8 other public schools cluster around Kell High School. Among the 9 schools in that immediate cluster with test data (this one included), Kell High School ranks 3rd on composite proficiency, higher than the local average of 60.3%.

The campus sits in a suburban setting.

Five-year trend. Looking back 7 years, enrollment at Kell High School has edged up 5%, going from 1,517 students in 2018 to 1,587 in 2025. White enrollment moved from 54% to 43% across the same window.

Inside the community feed, the page collects discussion, questions, and updates around school events, parent volunteer needs, and clubs. Members of the school community can share what they know.