Timeline
Learn
Applications Available for Class of 2030:
Wednesday, Sept. 3, 2025
Wednesday, Sept. 3, 2025
Application now available. Click here to apply!
Visit
The Wildcat Experience:
Sept. 10, 11, 12, 17, 18, 19, 24, 25, 26; Oct. 1, 2, 3, 15, 16, 17, 22, 23, 24, 29, 30
Sept. 10, 11, 12, 17, 18, 19, 24, 25, 26; Oct. 1, 2, 3, 15, 16, 17, 22, 23, 24, 29, 30
Click here for more details.
Visit
The Parent Experience:
Date based on your 8th grader's Wildcat Experience reservation
Date based on your 8th grader's Wildcat Experience reservation
Click here for more details.
Learn
Financial Assistance Applications Available:
Monday, Oct. 27, 2025
Monday, Oct. 27, 2025
Read more about the SI Financial Assistance program and apply.
If you need assistance, please contact the SI Financial Assistance office.
If you need assistance, please contact the SI Financial Assistance office.
Learn
CATS Information Night:
Wednesday, Nov. 5, 2025, 7 p.m.
Wednesday, Nov. 5, 2025, 7 p.m.
This session is for families who are interested in learning about the Center for Academics and Targeted Support (CATS). CATS is SI's program that supports students with learning differences and other challenges that impact learning.
Open to all SI applicants; signup is required.
Open to all SI applicants; signup is required.
Apply
Entrance Exam:
Saturday, Dec. 6, 2025, 8:30 a.m. - 12:30 p.m.
Saturday, Dec. 6, 2025, 8:30 a.m. - 12:30 p.m.
Read more about the HSPT Entrance Exam.
Reserve your spot through your online application to SI
Reserve your spot through your online application to SI
Learn
Financial Assistance Information Session:
Wednesday, Dec. 10, 2025
Wednesday, Dec. 10, 2025
Get more information about the Financial Assistance application process.
Open to all SI applicants; signup required.
Open to all SI applicants; signup required.
Visit
Open House:
Sunday, Jan. 25, 2026, 4 p.m. - 5:30 p.m.
Sunday, Jan. 25, 2026, 4 p.m. - 5:30 p.m.
The Open House is for 8th grade students. Click here to learn more about this visit opportunity.
Apply
Financial Assistance Application Deadline:
Friday, Jan. 30, 2026
Friday, Jan. 30, 2026
Get more information.
This deadline is for families of ALL incoming students, even if a sibling is currently enrolled at SI.
This deadline is for families of ALL incoming students, even if a sibling is currently enrolled at SI.
Decide
Admission & Financial Assistance Decision Notification:
Friday, March 20, 2026, 4 p.m.
Friday, March 20, 2026, 4 p.m.
Applicants and parents are notified online of admissions decisions and financial assistance awards.
Decide
Admitted Students Night
Monday, March 23, 2026, 6 p.m. - 7:30 p.m.
Monday, March 23, 2026, 6 p.m. - 7:30 p.m.
The Admitted Students Night is an opportunity for accepted students to get any and all questions answered by our SI community.
Decide
"Choose SI" Videos
Decide
Deadline to Enroll:
Friday, March 27, 2026, 6 a.m.
Friday, March 27, 2026, 6 a.m.
A non-refundable deposit of $1,600 is required to reserve a student's place in the Class of 2030. $1,500 will be applied to your tuition for the 2026-2027 school year.
Decide
Class of 2030 Registration:
begins Monday, March 30, 2026
begins Monday, March 30, 2026
All members of the Class of 2030 must complete their online registration packets by the deadline.