Summary
Horizon Elementary in Sterling, VA, serves 510 students in grades PK-5 and is part of Loudoun County Public Schools, a district ranked in the top 15% of Virginia districts. For the 2025-26 school year, the school ranked 304th out of 1,111 Virginia elementary schools, placing it in the 73rd percentile with a 4-star rating. That puts it in the upper tier of its immediate neighbors — ahead of Dranesville Elementary, Countryside Elementary, Potowmack Elementary, Sugarland Elementary, Sterling Elementary, Sully Elementary, and Rolling Ridge Elementary — while sitting just behind the two highest-performing nearby schools, Lowes Island Elementary and Algonkian Elementary.
One of Horizon's biggest strengths is its upper-grade performance. Fifth-grade reading proficiency reached 88.9% in 2025-26, above the district average of 81.0% and higher than both Lowes Island and Algonkian. Fifth-grade math (87.5%) and science (81.9%) also topped district averages. In contrast, 3rd-grade reading (68.4%) and math (75.3%) both trail district averages of 75.7% and 82.4%, respectively — a gap worth monitoring given how foundational 3rd grade is. The school also keeps attendance strong: its 12.4% chronic absenteeism rate is below the district's 14.1% and the state's 14.8%.
Horizon serves a moderately diverse socioeconomic population, with roughly 32% of students qualifying for free/reduced lunch — a much lower rate than nearby Sugarland Elementary, Potowmack Elementary, or Sterling Elementary (all above 85%), and closer in profile to Algonkian (27.6%) and Lowes Island (21.4%). The school's most persistent equity challenge is its low-income students, who have earned only 2 stars in each of the last three years. On a brighter note, outcomes for students with disabilities appear to have improved dramatically, jumping from the 34th to the 86th percentile between 2022-23 and 2023-24. Horizon spends about $19,157 per student, less than high-need neighbors such as Sugarland ($23,097) and Potowmack ($22,049), yet still delivers stronger academic results than most of those schools.
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