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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.
“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
Caligraphy
Chess
Flag Football
Construction/LEGO Club
Paint By Number
Sign Language
Soccer
Strategic Games
Volleyball
Walking Club
Watercolor Painting
Why St. John XXIII Catholic School?
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Today, we wear blue to show solidarity, support victims, and promote safe and healthy childhoods! 💙
The BINGO Crew is getting ready for summer break! Join us for the final BINGO of the 2025–2026 school year—it’s your last chance to play, win, and have some fun before we pause for the summer. We’ll be back in September! Interested in helping out? We’d love to have you!
Sign up to ...volunteer here: https://sj23.ivolunteer.com/bingo
Can you believe we’re entering the final weeks of the school year? We love staying connected with our students and reminding them that they will always be part of our school family. Their journeys began right here in these hallways, and it’s incredible to see how far they’ve come. Over the ...next few weeks, we’ll be highlighting members of the graduating class of Port Washington High School (SJ23 Alumni) and sharing where their journeys will take them next. We can’t wait to celebrate them with you! Congratulations to all upcoming graduates!
We have one final spot available in our Pre-3 class for the upcoming school year due to a family relocating. Monday, Wednesday, and Friday is available with a half-day or full-day option. Don’t miss your chance to secure the last seat—learn more and apply today! ...https://stjohn23rd.school/contact/
As our “Career Café” series comes to an end for the 2025–2026 school year, St. John XXIII is proud to reflect on a year filled with meaningful career exploration and hands-on learning opportunities for our students. Academic career planning is an important part of student development as they... begin to explore their interests and discover their unique skills, and Career Café has been a wonderful way to support that growth.
Throughout the year, our 6th, 7th, and 8th grade students had the opportunity to hear from guest speakers representing a variety of occupations. These conversations included what they do in their careers, the path they took to get there, their education, and more. Students were also able to further explore each speaker’s career through discussion and hands-on activities.
We would like to extend a special thank you to Tony Graykowski for joining us as one of our final Career Café speakers. As an Industrial Design Lead at Milwaukee Tool, Tony shared his career journey and provided students with insight into the creative and innovative world of product design. Thank you, Tony, and all of our guest speakers, for inspiring our students and helping them imagine their future possibilities!