Mary Lou Cowlishaw Elementary
Naperville, IL · Elementary School
Performance Overview
About This School
Mary Lou Cowlishaw Elementary is a elementary school located in Naperville, Illinois. The school serves 548 students.
With a DataScore of 52/100 (C), Mary Lou Cowlishaw Elementary performs at the state average for Illinois. Notably, the school is on an upward trend, showing meaningful improvement over the past three years.
31% of students qualify for free or reduced-price lunch, which is factored into the resource access component of the DataScore.
Other Schools in Indian Prairie CUSD 204
Frequently Asked Questions
Mary Lou Cowlishaw Elementary has a DataScore of 52/100 (Grade C), based on academic proficiency (35%), growth trend (30%), and resource access (35%). This measures actual student outcomes, not school inputs.
Mary Lou Cowlishaw Elementary has 548 students enrolled. The student-to-teacher ratio is 12.7:1.
Yes, Mary Lou Cowlishaw Elementary is on an upward trend with a 3-year growth score of +11, showing meaningful academic improvement.
The DataScore (0-100, A-F) grades every US public school based on academic outcomes: proficiency rates (35%), 3-year growth trend (30%), graduation rate for high schools (20%), and resource access (15%). Unlike other ratings, it focuses on what students actually achieve.
Mary Lou Cowlishaw Elementary is part of the Indian Prairie CUSD 204 in Naperville, Illinois. You can view all schools in this district and compare their performance on the district page.
DataScore is calculated from NCES proficiency rates, 3-year growth trends, graduation rates (high schools), and resource access indicators.