Chadwick-Milledgeville Jr HS
School pathway
Test scores
IAR + ISA 2024-25 . % Proficient (Levels 4-5)What this means: On the IAR + ISA, Illinois's statewide test, about 70 of every 100 students at this school read and write at grade level and about 37 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 3 points since 2023, while math scores are up about 2 points.
BeatsExpectations
Demographically-adjusted score · methodologyWhat this means: About 55% of students here test proficient in math and reading, compared with the roughly 47% 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 Chadwick-Milledgeville Jr HS
Chadwick-Milledgeville Jr HS is a secondary school of rural-scale scale in Milledgeville, Illinois, run under Chadwick-Milledgeville CUSD 399, instructing 183 students in grades 6 through 12. Compared to the state average of about 834 students per school, that is 78% smaller than typical.
Across the 2 schools in Chadwick-Milledgeville CUSD 399 (375 students total), Chadwick-Milledgeville Jr HS accounts for its share of the district's footprint.
In terms of who attends, Chadwick-Milledgeville Jr HS records that 95% of students identify as White, making the school strongly White-majority. Beyond that, the school lists 3% multiracial, 2% Hispanic.
On the income-and-resources front, On paper, Chadwick-Milledgeville Jr HS has 19 full-time-equivalent teachers, translating to a class-load average of around 9.6:1. Statewide, the average ratio sits near 13.8:1, putting Chadwick-Milledgeville Jr HS tighter than the state norm the norm. Roughly 43% of students at Chadwick-Milledgeville Jr HS qualify for free or reduced-price lunch, a commonly cited indicator of low-income enrollment.
Adjusting for the school's free-and-reduced-lunch share, Chadwick-Milledgeville Jr HS performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 46.6%, the actual is 54.6%, a residual of +8.0 points.
In the broader community, Carroll County reports that median household earnings sit near $60,758, 18% of adults hold a bachelor's degree or higher, and the poverty rate sits near 9%. In all, Carroll County runs 7 public schools (combined enrollment of about 1,945 students), of which Chadwick-Milledgeville Jr HS is one.
Nearest neighbor: Chadwick-Milledgeville Elem Sch, around 0.0 miles off. Within ten miles, there are 2 other public schools, a sparser pattern than typical urban areas. On composite proficiency, Chadwick-Milledgeville Jr HS comes 4th of 8 in the immediate cluster, above the nearby-schools average of 48.8%.
Geographically, the school is in a low-density area.
Looking at the recent track record. Chadwick-Milledgeville Jr HS's enrollment has climbed 14% since 2018, when it stood at 160 (now 183). Class-load math has narrowed: from 11.0:1 in 2018 to 9.6:1 in 2025.
On allk12, posts here usually surface around pickup logistics, teacher feedback, and after-school programs. The community welcomes input from current and former families.
Carroll County at a glance
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Related schools
- Chadwick-Milledgeville Elem SchElementary · 192 students
- Chadwick-Milledgeville Elem SchElementary · 192 students
- Chadwick-Milledgeville Elem Sch0.0 mi · 192
- Eastland Jr/Sr High School9.4 mi · 298
- Centennial Elem School10.3 mi · 294
- Aplington Middle School10.5 mi · 114
- Polo Comm High School10.6 mi · 186
- Franklin Elem School11.7 mi · 407