Ranked the #1 Catholic High School in the Kansas City Area on Niche.com
Voted the Best Private School In Kansas City by the Kansas City Star
High School Admissions
Key dates for the 2026-27 School Year Admissions Process
Saturday, November 15, 2025
Placement Test Prep Course (Optional)
- 8th grade students interested in attending Sion are invited to join our optional test prep course. The course, taught by Sion’s incredible faculty, will cover the four content areas of the PreACT 8/9 as well as test taking strategies. The cost of this course is $100 and includes lunch. Registration fee is non-refundable after Wednesday, 11/12.
- Students may still register to take the Placement Test even if they do not take this Prep Course - the course is OPTIONAL.
Monday, December 1, 2025
Application Deadline for Early Acceptance
Application Deadline for Early Acceptance
Saturday, December 6, 2025
High School Placement Test - Hosted at Sion
High School Placement Test - Hosted at Sion
- Registered students interested in attending Sion will take the PreACT 8/9. If your daughter needs accommodations during testing, please email our Admissions Director, Katie Glatz, with a current 504 or learning plan in order to register for extended test time.
Monday, December 31, 2025
Financial Aid Materials Deadline for Early Acceptance
Financial Aid Materials Deadline for Early Acceptance
- The financial aid application will go live Wednesday, October 1, 2025. You can read more about need-based financial aid here.
Final Deadline for all Early Acceptance Materials
Friday, January 16, 2026- 8th grade girls who have completed their full application materials by Thursday, January 8th will receive their offer package by Friday, January 16, 2026.
- If you are applying for financial aid, then we will need your full financial aid materials by Wednesday, December 31, 2025 to receive an offer with a financial aid package by Friday, January 16, 2026.
Wednesday, January 14, 2026 and Thursday, January 15, 2026
Interviews with Early ApplicantsSion will make offers to Early Applicants for the Class of 2030!
Monday, January 19, 2026
Launch Rolling Admissions
- Offers will be extended for the Class of 2030 within two weeks of receiving full application materials.
