National city placement
Large, fragmented school market
According to NCES CCD 2024-25, Joliet has more public-school enrollment than 93% of the 4,487 US cities in this directory. Joliet is among the largest city school systems in this directory by enrollment, but its campuses are divided among 7 districts. That combination matters: citywide averages blend separate budgets, staffing policies, attendance boundaries, and program rules. For a family comparing schools here, the district column is as important as the city average; two nearby campuses may answer to different boards and draw on different F-33 funding pools.
The school portfolio is elementary-weighted
20 of Joliet's 31 listed schools are elementary campuses. That composition means citywide enrollment and staffing averages are influenced more by early-grade operating patterns than by the city's 5 middle and 2 high-school records. Families comparing later grades should rely on those individual rows rather than the all-school mean.
Campus spread matters more than the city mean
The 40-point gap between Thomas Jefferson Elem Sch and Lynne Thigpen Elem School shows the range hidden by Joliet's average Resource Investment Index. The city figure is useful for national placement, but families ultimately choose among campuses with different grade spans, enrollment, district affiliations, and reported support fields. Start with schools serving the relevant grade level, then compare the index components rather than assuming the city average describes any one classroom.