Plainfield High School

Plainfield High School operates as a roomy four-year high school in Plainfield, Illinois, one of the schools within Plainfield SD 202. Current enrollment sits at 1,800 students spanning grades 9 through 12. Enrollment runs roughly 116% larger than the state mean of about 834.

Plainfield SD 202 runs 30 schools in total, collectively educating 24,556 students. Plainfield High School is one of those campuses.

Looking at the student body, Plainfield High School reports that the most-represented group is White (49%), with the rest of the student body spread across multiple groups; the rest breaks down as 31% Hispanic, 12% Black, 5% multiracial, 3% Asian. By comparison, Will County as a whole is about 62% White, so the school skews noticeably less White than its surroundings.

Looking at school resources, On paper, Plainfield High School has 114 full-time-equivalent teachers, translating to a class-load average of around 15.8:1. That figure is higher than the state norm's 13.8:1 average. Around 35% of the student body qualifies for free or reduced-price meals, which schools and policymakers use as a rough income-mix signal. Set against Will County (around 44%), the school's rate is noticeably below typical.

After controlling for student poverty, Plainfield High School tracks the demographic baseline. The model predicts 51.5% given the school's FRL share; actual proficiency is 40.6%.

Zooming out to the county, the surrounding county (Will County) logs that the typical household earns roughly $109,984 per year, about 38% of the adult population holds a bachelor's degree or above, and roughly 6% of residents live below the federal poverty line. Plainfield High School is one of 209 public schools in Will County (combined enrollment of about 113,008 students).

Central Elem School is the nearest neighboring public school, about 0.7 miles from this campus. 8 of the 8 nearest public schools sit inside a five-mile radius. On composite proficiency, Plainfield High School comes 8th of 8 in the immediate cluster, beneath the nearby-schools average of 61.8%.

The campus sits in an outer-ring setting.

Trend over the last 7 years. Over the past 7-year window, the student count ticked down 13%: 2,066 students in 2018 compared to 1,800 in 2025. Over the same period, the White share decreased from 58% to 49%. Class-load math has tightened: from 17.3:1 in 2018 to 15.8:1 in 2025.

Within the allk12 community for this school, the feed for Plainfield High School typically covers school events, parent volunteer needs, and clubs. Members of the school community can share what they know.