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WELCOME TO
OUR SCHOOL
St. John XXIII Catholic School (SJ23) provides a foundation of Catholic values and academic excellence for its students in preschool through 8th grade. Our faculty and staff are dedicated to building a strong academic, social, emotional, and spiritual foundation for our students.
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“I am beyond grateful for what St. John XXIII and the entire staff has done for my family. My kids would not be in the places they are if it weren’t for the dedication and love of the teachers and staff. THANK YOU ALL.”
– Current Parent
WE ARE EXCITED TO MEET YOUR FAMILY
Choosing the right educational option for your child is one of the most important decisions you will make. It’s important that your child’s school is an educational partner with like-minded values and goals, dedicated to helping your child reach his or her social, emotional, intellectual, physical, and spiritual potential. If you are interested in becoming part of our school community, we welcome you to contact us today!
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2026-2027 EXTRACURRICULAR CLUBS
Clubs meet from 3:30-4:30 PM and are held in two sessions:
Dance Club
Piano Club
Coloring & Paint-By-Number
Magic School (AI & Creativity) Club
Construction (LEGO) Club
Early Childhood Building Club
Introduction to 3D Printing
Wild Card Club
Board Games
Sign Language
Sole Mates | Walking Club
Why St. John XXIII Catholic School?
Check us out on Facebook!
Alright…we need your help! Give a “like” to your favorite pumpkin and help us determine the winner for our decorating contest!
3rd Grade had a very special visitor! Andrew Gibson from the Milwaukee Admirals stopped by to visit his sister, Ms. G, and spend time with her students. Thank you, Andrew, for taking the time to visit! GO ADS! 🏒
Join us for Holiday Shopping & Parent Connection!
Pear & Simple | November 11th from 5:00-8:00 PM
Find thoughtful gifts for loved ones—or a little something for yourself! A portion of each purchase benefits the 2027 Key Event, and every purchase also earns an Out of Uniform Read morePass! Shop local, support our school, and check a few gifts off your list!
Inventors Brewpub | November 11th from 6:00-7:00 PM
Join us at our Parent Meeting to discuss upcoming events, share new ideas, and mingle with fellow parents. It’s a great opportunity to meet new faces and get involved! Shop before the meeting or stop by afterward—we’d love to see you at both!
What a SPOOK-tacular night at SJ23! Thank you to everyone who joined us for Trunk or Treat last Friday! Even with the Brewers game on, we had an amazing turnout—and the kids had a blast! A special thank you to the Schueller, Ewig, and Silberman families for all their hard work in making this Read moreevent possible!
To all of our trunk decorators—you went above and beyond! Your creativity, treats, and enthusiasm made the evening extra special for our students and families. We’re grateful for this wonderful school community and everyone who helped bring the fun to life! Have fun photos from the evening? Share them in the comments—we’d love to see your favorite moments!
A VIP Thank You! We’re raising a glass to our Havana Nights VIP Tables! Thank you to the following businesses and individuals for supporting our 2027 Key Event. Your generosity helps make this celebration possible and supports the students at the heart of it all. A few VIP tables are still Read moreavailable! Gather your favorite people and reserve yours soon—we can’t wait to celebrate with you. Visit: keyevent2027.cbo.io