Summary:
The high-school list for ZIP code 62449 contains one school, Oblong High School, serving grades 9–12 and enrolling 165 students; it offers no local school-to-school comparison. In 2025–26, every reportable proficiency result was below Illinois, with the largest shortfall 16 points in grade 10 PreACT science.
Because Oblong is the only school listed, it is neither a local leader nor a trailer; its results are best understood against state figures. Its strongest comparison is grade 11 ACT science: 46% proficient, versus 48% statewide, a 2-point gap. The largest gaps include grade 10 PreACT science, at 32% versus 48% (16 points lower), and grade 11 ACT ELA, at 35% versus 50% (15 points lower). Grade 11 ACT math was 28%, compared with 40% statewide, a 12-point gap. Other important indicators are also less favorable than state figures: graduation was 84% versus 90%, while chronic absenteeism was 30% versus 24%.
Recent test results show improvement in most subjects, but not across the board: five of seven results with values in both 2024–25 and 2025–26 increased. ACT ELA, math, and science rose by 9, 22, and 17 percentage points, respectively, and PreACT ELA rose by 6 points in grade 9 and 8 in grade 10. Science was an exception: grade 10 PreACT science fell by 12 points and grade 9 fell by 3. SchoolDigger’s school percentile moved from 52 in 2023–24 to 26 in 2024–25, then to 29 in 2025–26; it lists Oblong CUSD 4 at rank 505 of 738, in the 32nd percentile, with 2 stars. For context, the school’s student–teacher ratio was 9 in 2024–25, and 45% of students were free/reduced lunch eligible that year. These are descriptive figures, not explanations for the results.
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