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Marquardt Middle School
School pathway
Test scores
IAR + ISA 2024-25 . % Proficient (Levels 4-5)What this means: On the IAR + ISA, Illinois's statewide test, about 55 of every 100 students at this school read and write at grade level and about 27 of 100 do math at grade level. Across all Illinois schools, those numbers are about 51 and 38. Reading and writing scores are up about 18 points since 2023, while math scores are up about 8 points.
BeatsExpectations
Demographically-adjusted score · methodologyWhat this means: About 40% of students here test proficient in math and reading, compared with the roughly 37% typical for Illinois schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Illinois's top nor bottom 10%.
7-year change
SY 2017-18 vs SY 2024-25About Marquardt Middle School
Located at 1912 Glen Ellyn Rd, in Glendale Hts, Illinois, Marquardt Middle School is a large middle-grades school that hosts 754 students (grades 6 through 8), operated by Marquardt SD 15. By comparison, Illinois's public schools average about 462 students each, so Marquardt Middle School sits 63% larger than that benchmark.
Across the 5 schools in Marquardt SD 15 (2,310 students total), Marquardt Middle School accounts for its share of the district's footprint.
Looking at the student body, Marquardt Middle School shows that 57% of the student body identifies as Hispanic. The remainder reads as 17% White, 12% Black, 12% Asian, 2% multiracial. That is noticeably more Hispanic than the county at large, where the share is closer to 16%.
Looking at school resources, Marquardt Middle School records 73 full-time-equivalent teachers, putting the student-to-teacher ratio at about 10.3:1. Statewide, the average ratio sits near 13.0:1, putting Marquardt Middle School tighter than the state norm the norm. Roughly 60% of students at Marquardt Middle School qualify for free or reduced-price lunch, a number frequently used as a low-income enrollment indicator. Set against DuPage County (around 34%), the school's rate is noticeably above typical.
Adjusting for the school's free-and-reduced-lunch share, Marquardt Middle School tracks the demographic baseline. The model predicts 36.9% given the school's FRL share; actual proficiency is 40.1%.
In the broader community, census data for DuPage County shows median household earnings sit near $112,096, roughly 52% of adults have completed at least a four-year degree, and census figures put the poverty rate at about 5%. Marquardt Middle School is one of 277 public schools in DuPage County (combined enrollment of about 138,557 students).
Nearest neighbor: Winnebago Elem School, around 0.9 miles off. Counting just inside five miles, 8 other public schools cluster around Marquardt Middle School. Ranking that nearby cluster on reported proficiency puts Marquardt Middle School at 4th of 7; the average score across the group is 37.8%.
Marquardt Middle School operates from a commuter-belt location.
Over the past 7-year window. Looking back 7 years, enrollment at Marquardt Middle School has declined 6%, going from 804 students in 2018 to 754 in 2025. The Hispanic share of enrollment rose from 51% to 57% over that span. The student-to-teacher ratio narrowed from 12.4:1 in 2018 to 10.3:1 today.
Within the allk12 community for this school, recent activity here tends to focus on pickup logistics, teacher feedback, and after-school programs. Parents, students, alumni, and staff are welcome to weigh in.
DuPage County at a glance
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- Winnebago Elem School0.9 mi · 343
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