Summary:
Lemont-Bromberek Central School District 113A has four schools—three elementary schools and one middle school—serving PK through grade 8. The latest reported results are for 2025–2026; Oakwood School, which serves PK–grade 1, has no test results supplied. The clearest shared strength is mathematics compared with the state: the three tested schools averaged 67% proficient, 27 percentage points above the state’s 40%; their 74% ELA average was 18 points above the state’s 56%.
Old Quarry Middle School stands out in ELA, with 87% proficient—about 20 points above the average for Central School and River Valley School combined—and 31 points above the state. Math has two near-leaders: River Valley scored 70.9% and Old Quarry 70.7%, each well above Central’s 59%. Central had the lowest all-grades score in both subjects, but still exceeded the state by 11 points in ELA and 19 in math. These all-grades results summarize schools serving different grades; grade-specific comparisons are more useful for judging performance in the same grade.
Recent results favor Old Quarry’s upward trend: from 2024–2025 to 2025–2026, it gained 2 points in ELA and 5 in math. Central fell 1 point in ELA and 5 in math, while River Valley rose 3 in ELA and fell 3 in math; notably, Central’s grade-5 science result climbed 19 points to 65%. SchoolDigger rates the district 4 stars and ranks it 91st of 738 districts; its latest school percentiles were 94th for Old Quarry and 77th for Central. For context, 2024–2025 student-teacher ratios ranged from 15.2 at Old Quarry to 16.3 at River Valley, and the free/reduced lunch eligible shares that year ranged from 15% at Oakwood to 20% at Old Quarry.
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