Winnebago Elem School

Winnebago Elem School is one of the mid-tier K-5 schools in Bloomingdale, Illinois, operated by Marquardt SD 15, with 343 students on its rolls from grades pre-K through 5.

Marquardt SD 15 runs 5 schools in total, collectively educating 2,310 students. Winnebago Elem School is one of those campuses.

In terms of who attends, Winnebago Elem School shows that the largest single group is Hispanic at 36%, but no single group is in the majority; the rest breaks down as 32% White, 18% Asian, 11% Black, 4% multiracial. That is considerably more Hispanic than the county at large, where the share is closer to 16%.

In terms of school funding signals, On paper, Winnebago Elem School has 35 full-time-equivalent teachers, translating to a class-load average of around 9.7:1. That figure is tighter than the state norm's 13.9:1 average. Roughly 47% of students at Winnebago Elem School qualify for free or reduced-price lunch, often used as a Title I proxy. That share is higher than DuPage County's rate of about 34%.

On a residual basis (actual vs predicted given the student mix), Winnebago Elem School performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 44.6%, the actual is 47.7%, a residual of +3.1 points.

In the broader community, community-level numbers for DuPage County indicate median household earnings sit near $112,096, roughly 52% of adults have completed at least a four-year degree, and roughly 5% of residents live below the federal poverty line. In all, DuPage County runs 277 public schools (combined enrollment of about 138,557 students), of which Winnebago Elem School is one.

The closest other public school is Dujardin Elementary School, roughly 0.7 miles away. Counting just inside five miles, 8 other public schools cluster around Winnebago Elem School. Ranking that nearby cluster on reported proficiency puts Winnebago Elem School at 2nd of 7; the average score across the group is 40.7%.

Geographically, the school is in a commuter-belt area.

Five-year trend. Winnebago Elem School's enrollment has shrank 26% since 2018, when it stood at 465 (now 343). White enrollment moved from 37% to 32% across the same window. Class-load math has narrowed: from 15.2:1 in 2018 to 9.7:1 in 2025.

Within the allk12 community for this school, the feed for Winnebago Elem School typically covers science fair prep, picture-day reminders, and bus-route questions. Anyone with firsthand experience at this school can post or comment.