Arnett C Lines Elem School

Arnett C Lines Elem School operates as a medium-sized K-5 school in Barrington, Illinois, part of Barrington CUSD 220. Current enrollment sits at 501 students spanning grades K through 5. Enrollment runs roughly 31% larger than the state mean of about 381.

Barrington CUSD 220 runs 12 schools in total, collectively educating 7,936 students. Arnett C Lines Elem School is one of those campuses.

Demographically, Arnett C Lines Elem School logs that 78% of the student body identifies as White; the rest comes out to 13% Hispanic, 4% multiracial, 4% Asian. By comparison, Cook County as a whole is about 44% White, so the school skews meaningfully more White than its surroundings.

Looking at school resources, On paper, Arnett C Lines Elem School has 38 full-time-equivalent teachers, translating to a class-load average of around 13.2:1. Statewide, the average ratio sits near 13.9:1, putting Arnett C Lines Elem School tighter than the state norm the norm. About 14% of enrolled students meet the income threshold for free or reduced-price lunch, a commonly cited indicator of low-income enrollment. That share is noticeably below Cook County's rate of about 66%.

Adjusting for the school's free-and-reduced-lunch share, Arnett C Lines Elem School performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 63.5%, the actual is 74.7%, a residual of +11.2 points.

In the surrounding community, Cook County reports that median household earnings sit near $83,498, 43% of adults hold a bachelor's degree or higher, and the poverty rate sits near 10%. In all, Cook County runs 1406 public schools (combined enrollment of about 697,934 students), of which Arnett C Lines Elem School is one.

Barrington Middle Sch Station is the nearest neighboring public school, about 0.1 miles from this campus. Counting just inside five miles, 8 other public schools cluster around Arnett C Lines Elem School. On composite proficiency, Arnett C Lines Elem School comes 4th of 7 in the immediate cluster, higher than the nearby-schools average of 73.5%.

Geographically, the school is in a residential area.

Trend over the last 7 years. Looking back 7 years, enrollment at Arnett C Lines Elem School has expanded 11%, going from 451 students in 2018 to 501 in 2025. Over the same period, the White share grew from 73% to 78%.

On allk12, the page collects discussion, questions, and updates around pickup logistics, teacher feedback, and after-school programs. The community welcomes input from current and former families.