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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!
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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?
Check us out on Facebook!
Your next Bingo night is just a click away! We’re excited to introduce our new Bingo website: https://sj23.bingo/
Check upcoming dates, view the latest jackpot amounts, find special announcements, and add Bingo nights directly to your personal calendar. You can also sign up for text updates Read moreto receive reminders, jackpot news, and other highlights—with no more than three messages per month.
Whether you’re a longtime player or joining us for the first time, we’d love to welcome you for a fun night with friends and neighbors!
Visit https://sj23.bingo/ to explore and sign up for text updates!
Congratulations to our 8th-grade volleyball team on its invitation to the 2026 Elizabeth Seton Division 1 Volleyball Tournament! The Seton is an invitation-only tournament featuring the top 8th-grade volleyball teams from the ten counties of the Milwaukee Archdiocese. What a wonderful recognition Read moreof our student-athletes’ hard work, teamwork, and dedication! Come cheer on our Phoenix as they represent SJ23!
DAY 6: PAUSE. PRAY. BE PRESENT.
In the middle of our busy lives, we're invited to slow down, spend time in prayer, and give thanks for the blessings we've received over the past 10 years. Join us for a special Holy Hour with a relic of St. John XXIII as we gather in Eucharistic Read moreAdoration and prayer as a community.
Holy Hour: 5:00–6:00 PM
St. Mary's Church
The evening will conclude with Benediction at 6:00 PM, followed by an invitation to stay for a casual dinner of burgers and brats and a time of fellowship together. Whether you come for prayer, fellowship, or both, all are welcome. Let's take this time to reflect, reconnect, and give thanks for 10 years of God's blessings!
We honestly cannot wait for you to see what becomes of this project…♥️
DAY 5: LET'S PLAY!
A little friendly competition, lots of school spirit, and time together as a community — what could be better? Join us for our Evening Sporting Event as we continue celebrating 10 years of St. John XXIII! Enjoy volleyball, tailgate games, and concessions in a Read morerelaxed, family-friendly atmosphere.
6:30–8:30 PM
St. John XXIII School Gymnasium
Whether you're ready to jump into a game, cheer from the sidelines, or simply catch up with friends, we'd love to see you there! Bring your family, invite a friend, and come enjoy an evening of community fun!