St. John’s Northwestern Academy

St. John’s Northwestern (SJN) is Wisconsin’s premier co-educational college preparatory boarding and day school for grades 7-12 and post-graduate. Established in 1884, the academy boasts a breathtaking campus with historical buildings throughout, featuring modern renovations. Conveniently located in charming Delafield, Wis., SJN is dedicated to preparing each student for success as tomorrow’s global leaders. SJN empowers young men and women to achieve their fullest potential by blending rigorous academics, innovative programs, and character-building leadership opportunities. Our signature programs—Engineering, Robotics, Aviation, JROTC Leadership, DME Basketball, and the AP Capstone Program—ignite curiosity and foster skills that prepare our students for success in an ever-evolving world.

Our dedicated faculty and staff are committed to providing individualized attention to every student in a safe, structured environment that provides a foundation for life. The academic and leadership curricula are complemented by a strong athletic program, character development, and a range of extracurricular opportunities.

Average class size: 12
Average enrollment: 240
AP Capstone Diploma Program with 10 AP classes offered
Earn 50+ college credits with dual enrollment courses
100% college acceptance rate
Average $115,000 in scholarship awards and offers
Nearly 40 competitive, academic, and special interest clubs like DECA, Model UN and competitive robotics teams.