Marissa Elem School

Marissa Elem School is a low-enrollment elementary campus in Marissa, Illinois, run under Marissa CUSD 40. The school teaches 266 students in grades pre-K through 6. By comparison, Illinois's public schools average about 381 students each, so Marissa Elem School sits 30% smaller than that benchmark.

Marissa CUSD 40 runs 2 schools in total, collectively educating 492 students. Marissa Elem School is one of those campuses.

Looking at the student body, Marissa Elem School records that nearly all students (90%) are White. Beyond that, the school shows 4% multiracial, 3% Black. By comparison, St. Clair County as a whole is about 60% White, so the school skews noticeably more White than its surroundings.

On the income-and-resources front, On paper, Marissa Elem School has 23 full-time-equivalent teachers, translating to a class-load average of around 11.6:1. The state averages around 13.9:1, so this campus is tighter than the state norm typical. About 58% of enrolled students meet the income threshold for free or reduced-price lunch, a commonly cited indicator of low-income enrollment.

With demographic context factored in, Marissa Elem School performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 38.3%, the actual is 28.1%, a residual of -10.2 points.

In the surrounding community, census data for St. Clair County shows the typical household earns roughly $73,854 per year, 32% of adults hold a bachelor's degree or higher, and roughly 10% of residents live below the federal poverty line. Marissa Elem School is one of 96 public schools in St. Clair County (combined enrollment of about 40,879 students).

Marissa Jr & Sr High School is the nearest neighboring public school, about 0.8 miles from this campus. 8 of the 8 nearest public schools sit inside a ten-mile radius, suggesting a relatively low-density school footprint. Among the 9 schools in that immediate cluster with test data (this one included), Marissa Elem School ranks 8th on composite proficiency, beneath the local average of 44.1%.

The school occupies a countryside site.

Looking at the recent track record. Looking back 7 years, enrollment at Marissa Elem School has decreased 18%, going from 325 students in 2018 to 266 in 2025. Class-load math has tightened: from 15.5:1 in 2018 to 11.6:1 in 2025.

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