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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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CLICK HERE FOR THE 2026 ANNUAL FLOWER SALE CATALOG, ORDER FORM, AND MORE INFORMATION!
“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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EXTRACURRICULAR CLUBS
Clubs meet from 3:30-4:30 PM and are held in two sessions:
3D Printing & Coding
Amazing Aspiring Artists
Bucket Drumming
Chess
Flag Football
LEGO Club
Sign Language
Soccer
Strategic Games
Volleyball
Watercolor Painting
Why St. John XXIII Catholic School?
Check us out on Facebook!
What an incredible night at the 2026 Key Event – Casino Royale!
Thank you to everyone who joined us for such a fun and memorable evening. From the energy in the auction room to the excitement at the tables, it was truly special to see our community come together in support of our ...school. Your generosity, enthusiasm, and support made the night unforgettable.
Highlights from the Night:
✨ Live Auction: $14,750
✨ Silent Auction: $24,109 (1,581 bids on 206 items!)
✨ Games & Raffles: $19,800
✨ Underwriting: $38,700
✨ Dinner Tickets: $13,550
✨ Corporate Tables: $23,750 (11 tables)
✨ Classroom Creations: $1,270
✨ Main Raffle: $5,650
We are incredibly grateful to our sponsors, donors, volunteers, and every guest who attended and helped make the evening such a success. Your support directly benefits our students and the future of our school. Please share YOUR fun photos in the comments below!
Our 7th & 8th graders took learning to the kitchen! Students were challenged to create a healthy meal on a $15 budget. They worked in groups to plan their meals, read ingredient labels, make grocery lists, shop for their ingredients, and cook their final dish. A great hands-on experience that ...combined nutrition, budgeting, teamwork, and life skills!
This past Wednesday, St. John XXIII Catholic School was honored to attend the Catholic Schools Dinner hosted by the Archdiocese of Milwaukee at the Baird Center in downtown Milwaukee. With more than 750 guests in attendance, our school was recognized by the Archbishop as one of only three schools ...highlighted for receiving the Gifts Grant. This $10,000 grant will help enhance our middle school STEM curriculum, expanding opportunities for our students to explore, create, and grow. This achievement was made possible through the generosity of an additional donor whose support helped bring this vision to life. We are incredibly grateful for the community and partners who continue to invest in our students and their future.
We extend our heartfelt thanks to all of our 2026 Key Event Sponsors for their generosity, partnership, and unwavering support. Your contributions play a vital role in the success of this event and directly impact our community. We are truly grateful for your commitment and belief in our mission. ...Thank you for helping make this year’s Key Event possible. WE WILL SEE YOU TOMORROW NIGHT ON THE RED CARPET!
2026 Key Event Sponsors (Alphabetical Order):
Advanced Restoration | The Dimmer Family
Align Chiropractic
Ansay & Associates, LLC
Antoine, Hoeft & Eberhardt, S.C.
Aspen Medical Aesthetics & Laser Clinic
Baird
CG Schmidt
Charlie & Julie Pfrang
Chimney Concepts
Drew's True Value
Eernisse Funeral Homes
Eric Von Schledorn
Insight Investment Advisers
Jeff & Angel Schmit
Jiffy Overhead Door
Knights of Columbus
Pear & Simple
Port Washington State Bank
Port Washington-Saukville Rotary Club
RE/MAX United | The Didier Families
Renaissance Charitable
Robert F. Henkle Jr.
Sharbuno Jewelers
Sharon-Cutwell
Shirli Flack
Sound By Design
St. John XXIII Catholic Parish
The Becker Family
The Cline Family
The Cook Family
The Gruenwald Family
The Hubacek Family
The Joyce Family
The Karasch Family
The Kitzinger Family
The Lackovic Family
The Lippe Family
The Lichtensteiger Family
The Lundgren Family
The Sereno Family | CPR
XCEL Tooling, Inc.
