Thank you for considering ISAAC's unique educational environment for your child. ISAAC is a School of Choice that accepts students from throughout Connecticut.

The lottery registration and admissions process at ISAAC requires attendance to one of the June Registration dates. Each year ISAAC admits new incoming students for each grade, depending upon the availability of open slots. Students are selected based on a fair, random lottery, which ensures all students have an equal opportunity to enroll. Students that are not selected will be added to the waiting list.

Upon graduation, ISAAC students attend public and Choice schools in the region as well as private and boarding schools throughout New England.

ISAAC online application 2019-2020 School Year

Click on the links below to complete Registration Forms:
2019-2020 New Student Registration

2019-20 RETURNING Student Registration Form
2019-2020 Electronic Form
2019-2020 Permission Form

2019-20 Potassium Iodide (KI) Form
2019-2020 Students' Dues


I-EXL Club Sign Up & Payment Form


If you have any questions regarding the application process or lottery/waitlist process, please contact the ISAAC main office at (860)447-1003.