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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?
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We’re excited to announce that we are renewing our Milwaukee County Zoo membership for another year! This means our families will once again have the opportunity to enjoy a day at the Zoo together. We have TWO Zoo Passes available to reserve through the School Office. Passes are available on a Read morefirst-come, first-served basis and may be checked out for up to two days at a time.
🎟️ Each pass includes:
• 5 Zoo admission tickets + parking
• 10% off at the Gift Shop
• Discounts on Expeditions
• Discounts on the Sky Adventure Ropes Course
To check availability or reserve a pass, please contact the School Office.
We want to see your Zoo adventures! A photo album will be created at the end of the school year. Send your favorite Zoo photos to Mrs. Brewster!
We’ve been meeting, planning, organizing, meeting, cleaning, prepping, meeting, dreaming, rocking, rolling and meeting even more behind the scenes—and we can officially say it… we are READY for YOU! Are YOU ready? One more week! Get those final Summer Bucket List items checked off, enjoy Read morethese last few days, and start packing those backpacks!
It was a beautiful day to BE BACK TOGETHER! Our prep for Back to School has officially begun, and we are recharged, refocused, and more ready than EVER to welcome our students in just a few short weeks!
A huge thank you to our incredible staff who make it all possible—especially the Read morefamiliar faces we celebrated who have been part of our school family for 5/10 years! It takes a village and we are glad you’re part of ours.
Scroll to browse ➡️ and celebrate these amazing milestones with us!
19 Days to Go! What’s still on your Summer Bucket List?
Beach day? Ice cream? Camping? Sleeping in?
Whatever is on your list, SOAK IT UP—we’re just 19 days away from seeing our Phoenix family again!