South Lakes High

As a well-populated high school in Reston, Virginia, South Lakes High teaches 2,434 students from grades 9 through 12, operated by Fairfax County Public Schools. Enrollment runs roughly 101% bigger than the state mean of about 1,213.

Fairfax County Public Schools comprises 199 schools with combined enrollment of 179,323 students; South Lakes High is among them.

On the student-mix side, South Lakes High lists that the most-represented group is White (40%), with the rest of the student body spread across multiple groups. The remainder is composed of 29% Hispanic, 13% Black, 10% Asian, 8% multiracial. That is considerably less White than the county at large, where the share is closer to 49%.

In terms of school funding signals, Staff filings list 208 full-time-equivalent teachers, which works out to roughly 11.7:1 students per teacher. That figure is tighter than the state norm's 13.9:1 average. An estimated 34% of students are eligible for free or reduced-price lunch, a commonly cited indicator of low-income enrollment.

On a residual basis (actual vs predicted given the student mix), South Lakes High tracks the demographic baseline. The model predicts 78.8% given the school's FRL share; actual proficiency is 76.6%.

Across the wider county, ACS estimates for Fairfax County put median household earnings sit near $153,637, 65% of adults hold a bachelor's degree or higher, and the poverty rate sits near 4%. Across Fairfax County's 222 public schools (combined enrollment of about 174,475 students), South Lakes High is one campus in the mix.

The closest other public school is Hughes Middle, roughly 0.2 miles away. 8 of the 8 nearest public schools sit inside a five-mile radius. Among the 9 schools in that immediate cluster with test data (this one included), South Lakes High ranks 5th on composite proficiency, ahead of the local average of 73.3%.

Geographically, the school is in a city-core area.

Looking at the recent track record. Looking back 7 years, enrollment at South Lakes High has declined 3%, going from 2,520 students in 2018 to 2,434 in 2025. The student-to-teacher ratio narrowed from 13.2:1 in 2018 to 11.7:1 today.

Inside the community feed, the feed for South Lakes High typically covers science fair prep, picture-day reminders, and bus-route questions. Anyone with firsthand experience at this school can post or comment.