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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.
Learn More About Our Community
“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!
Quick links to help you
STAY CONNECTED
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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Middle school is a time to discover new interests, build friendships, and grow into the person you’re becoming. At St. John XXIII Catholic School, students have opportunities to do all of that in a community rooted in faith.
Our middle school students explore their interests through Read moreelectives such as gardening, sign language, art, music, and AI & creativity. They practice leadership through Student Council, put faith into action through service, and receive academic support that helps them build confidence and move forward. Along the way, they learn, laugh, and make memories together.
The best way to picture yourself here? Experience it! We invite prospective middle school students to schedule a shadow day. Spend a morning or afternoon in our classrooms, meet students and teachers, and get a feel for everyday life at our school. Whether you’re looking ahead to next school year or considering a change, we’d love to meet your family. Contact the school office to learn more and arrange your visit.
New opportunities. New friendships. Your next chapter starts now. Visit: stjohn23rd.school/contact
Let’s cheer on the BREWERS!
Students may wear a Milwaukee Brewers top with uniform bottoms tomorrow to show their support.
💛⚾️💙
Go Brewers!
WE HIT 1,000 FOLLOWERS! 🎉
1,000 people following along with the SJ23 story — and we couldn’t be more grateful! Thank you for cheering on our students, celebrating their accomplishments, supporting our teachers and staff, and being part of our school community near and far. From big Read moremoments to everyday wins, we love sharing what makes St. John XXIII Catholic School so special.
Another day…
Another harvest.
These students are on track to donate over 250 pounds to the local Food Pantry!