Mary Lou Cowlishaw Elementary
🇺🇸 Official data · 2025Naperville, Illinois 60540 · Indian Prairie CUSD 204
#567 of 2,303 elementary schools in Illinois
#19367 of 50,301 nationally
About Mary Lou Cowlishaw Elementary
Mary Lou Cowlishaw Elementary is a public elementary located in Naperville, in the Indian Prairie CUSD 204 school district of Illinois, United States. It caters for Grades K–5. In 2025 it enrolled 589 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 58.3 out of 100, placing it in the top 50% of elementary schools in United States and 567th of 2,303 ranked elementary schools in Illinois. Its strongest component is community advantage (fewer free/reduced-price lunch) (86th percentile), and its weakest is math proficiency (46th percentile).
Other published figures: enrollment 589.
There are 40 schools in Naperville; Mary Lou Cowlishaw Elementary ranks 38th of 39 scored schools there.
Success Index (US) breakdown
Each component is a percentile against elementary schools across United States.
- Math proficiency (30%)46%
- Reading proficiency (30%)49%
- Community advantage (fewer free/reduced-price lunch) (25%)24.8%
- Students per teacher (15%)14.7
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Mary Lou Cowlishaw Elementary by the official sources.
- Enrollment
- 589
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 24.8%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 14.7
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 49%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 46%
- Share of tested students proficient or above (all students, all grades).
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Schools near Mary Lou Cowlishaw Elementary
Closest schools by straight-line distance, with their Success Index (US).
May Watts Elementary School
Naperville · Public elementary · Grades K–5
668 students · 1.4 km away
Still Middle School
Aurora · Public middle · Grades 6–8
709 students · 2.6 km away
Prairie Children Preschool
Aurora · Public other · Grades PK–PK
643 students · 2.6 km away
Naperville Central High School
Naperville · Public high · Grades 9–12
2,589 students · 3.6 km away
Owen Elementary School
Naperville · Public elementary · Grades K–5
577 students · 3.7 km away
Arlene Welch Elementary School
Naperville · Public elementary · Grades K–5
576 students · 3.7 km away
White Eagle Elementary
Naperville · Public elementary · Grades K–5
541 students · 3.9 km away
Elmwood Elem School
Naperville · Public elementary · Grades K–5
726 students · 3.9 km away
McCarty Elementary School
Aurora · Public elementary · Grades K–5
478 students · 4.1 km away
Robert Clow Elem Sch
Naperville · Public elementary · Grades K–5
343 students · 4.1 km away
Similar schools
Public elementary schools in Illinois with a comparable Enrollment.
LaSalle II Lang Acad Elem Sch
Chicago · Public elementary · Grades PK–8
589 students
Riddle Elementary School
Mattoon · Public elementary · Grades K–5
589 students
River Valley School
Lemont · Public elementary · Grades 2–3
588 students
Lakewood School
Carpentersville · Public elementary · Grades PK–5
590 students
George Washington Elem School
Park Ridge · Public elementary · Grades K–5
588 students
Lincoln-Douglas Elementary School
Quincy · Public elementary · Grades K–5
588 students
Frequently asked questions
Is Mary Lou Cowlishaw Elementary a good school?
Mary Lou Cowlishaw Elementary has a Success Index (US) of 58.3 out of 100 (Top 50% of elementary schools in United States) and ranks #567 of 2,303 in Illinois. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Mary Lou Cowlishaw Elementary rank in Illinois?
Mary Lou Cowlishaw Elementary ranks #567 of 2,303 elementary schools in Illinois and #19367 of 50,301 nationally on the Success Index (US) (2025 data).
How many students attend Mary Lou Cowlishaw Elementary?
Mary Lou Cowlishaw Elementary had 589 students in 2025.
Is Mary Lou Cowlishaw Elementary a elementary school or a high school?
Mary Lou Cowlishaw Elementary is classified as a elementary covering Grades K–5. It is a public school.
What other schools are near Mary Lou Cowlishaw Elementary?
There are 10 schools within 15 km of Mary Lou Cowlishaw Elementary; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.