William J. Onahan Elementary Home

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Onahan staff
Aerial photo of Onahan
Mrs. C as a pool noodle octopus
Onahan Elementary
books

Latest News

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Welcome to Our New Website!

Thank you for visiting our new website! Please check back often as updates are made, and click on article headlines to view full stories where applicable.

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Main Office Summer Hours

Tues. - Wed. - Thurs.
8 am - 12 pm
For an off hours appointment, please call us at 773-534-1180
(The office will be closed 7/28 thru 8/1)
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Upcoming Events

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About Us

Welcome to Onahan! We believe that parent participation is key to student success; our new website is designed to provide parents with all the information they need to be active participants in their student’s education. You will find that the site works just as well on mobile devices as it does on a desktop so you can find information on the go.
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Our Vision

Onahan’s vision is to provide a safe and fun learning environment that promotes mutual respect, inclusion and creative problem-solving. Our team works to inspire the interests and meet the academic and social-emotional needs of all students. With every decision we face, we keep the best interest of children at heart.
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