Chicago Public Schools / William J Onahan School
Agency file
The William J Onahan School administers public education — funding, academic standards, and the operation of schools.
In 2026, this agency had 71 employees with median total compensation of $134,686; the highest distinct record was $230,126.
What the records show
These summaries compare pay within the agency before listing individual records.
How 2026 total compensation is spread across the 71 employees. Each bar is a pay range; taller bars mean more people earn in that range. The amber line marks the median ($134,686) — half earn less, half more. The far-right bar collects the highest earners.
What an average paycheck here is made of — base salary versus overtime, other pay (bonuses, allowances), and benefits. A large overtime or other-pay share means take-home often exceeds base salary.
The pay ladder for this department. Someone at the 90th percentile earns $156,969 — more than 90% of the department; the 10th percentile earns $71,253. The shaded band is the middle half of employees (25th–75th percentile).
The most common job titles in this department by headcount, with the median total compensation for each. Click a title to see everyone who holds it.
Record list
Page 1
Principal/William J Onahan School
Source-specific fields
At William J Onahan School, Marianne Patten serves as a Principal. Their 2026 pay totaled $230,126.
Assistant Principal/William J Onahan School
Source-specific fields
Sarah Dejulio works as a Assistant Principal for William J Onahan School. Sarah earned $189,726 in 2026.