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Diamond Lake School District 76


At a glance
632ndof 738 Illinois districts▲ 55
Better than 14% of Illinois districts
Elementary 2Middle 1Grades PK, KG-8
26156 N Acorn Ln
Mundelein, IL 60060-4071
·(847) 566-9221·All Illinois district rankings →
Statewide performance 2018–2026
2026: better than 14.4% of districts
3
Schools
810
Students
Top rankedWest Oak Middle School826th of 1,126 Illinois middle schools
▲
Biggest riser
West Oak Intermediate School up 113 spots statewide this year
Summary:

Diamond Lake School District 76 has three schools serving preschool through grade 8: Diamond Lake School (PK–2), West Oak Intermediate School (grades 3–5), and West Oak Middle School (grades 6–8). Test results are available for the two West Oak schools, but not for Diamond Lake. The clearest concern in the reported results is math: the schools’ 2025–26 all-grades averages were 24% compared with 40% statewide, and results were below the state in every tested grade.

West Oak Middle stands out in ELA: its 2025–26 all-grades result was 57%, about 1 percentage point above the state and 11 points above West Oak Intermediate at 46%. Middle’s ELA results were also 3 points above the state in grade 7 and 4 points above in grade 8, though its grade 6 result was 17 points below. Intermediate leads in all-grades math, at 28% compared with Middle’s 20%, but both trail the state: Intermediate by 12 points and Middle by 20. Intermediate’s grade 3 math result was closest to the state, still 9 points below; Middle’s grade 8 result was 19 points below. In science, Intermediate’s grade 5 result was 44% versus 48% statewide, while Middle’s grade 8 result was 39% versus 52%; these are different grades.

ELA improved at both West Oak schools between the two test years: Middle gained 19 percentage points and Intermediate gained 11, while the state rose 3 points. Math changed little overall: Middle gained 2 points, Intermediate fell 3, and the state rose 1. SchoolDigger lists both schools at one star and the 27th percentile for 2025–26, down from two stars and the 33rd percentile in 2024–25; the district is ranked 632nd of 738, at the 14th percentile, with one star. As context, 2024–25 student-teacher ratios were 9.2 at Intermediate and 10.3 at Middle. Free/reduced lunch eligible figures were 54% at Diamond Lake in 2024–25, 60% at Intermediate in 2024–25, and 62% at Middle in 2023–24.

Ranking:
Map legend
E Elementary M Middle H High A Alternative P Private




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SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau, the Illinois Department of Public Health and the Illinois State Board of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.

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