Summary:
Zip code 62884 has one high school, Sesser-Valier High School, serving grades 9–12 with 175 students. Its 2025–2026 results vary considerably by grade and subject: grade 9 ELA and science are above Illinois results, while several other reported results are below. The most important finding is the sharp grade-to-grade split, especially in science: 67% of grade 9 students were proficient, compared with 22% in grade 10, a 45-point difference.
There is no school-to-school top or bottom in this area because Sesser-Valier is the only high school listed. Within the school, grade 9 results stand out positively against the state: ELA was 71% versus 62% statewide, and science was 67% versus 47%. Other results were below state benchmarks, including grade 10 science at 22% versus 48% (27 points below), grade 9 math at 26% versus 42% (16 points below), and grade 11 ACT ELA at 36% versus 50% (14 points below). Grade 10 ELA was also below the state, at 44% versus 54%. Beyond tests, the graduation rate was 84%, 5 points below the state, while chronic absenteeism was 30%, 7 points higher.
Recent test changes are mixed rather than pointing to one schoolwide trend. From 2024–2025 to 2025–2026, grade 9 results rose in science, from 31% to 67%; ELA, from 59% to 71%; and math, from 14% to 26%. Grade 10 moved the other way in its reported subjects: science fell from 42% to 22%, and ELA from 53% to 44%. SchoolDigger’s reported ranking percentile climbed from 32 in 2023–2024 to 44 in 2025–2026, but that does not mean every outcome improved. For context, the school had a 10.2 student-teacher ratio and 48% free/reduced lunch eligible students in 2024–2025; these figures describe the school, but do not explain its results.
Thank you for your feedback!