Current and prospective ISI families should be aware that policies supporting our COVID-ready campuses 
may supersede the descriptions of the programs and/or services described on this page.

Offering the Midwest's most distinct academics, high school at ISI
better prepares students for their college experiences.
A part of the ISI Upper School, our high school serves students in grades 9 to 12.
The student experience includes the completion of the IB Middle Years Program
before students move to the IB Diploma Program in grades 11 and 12.
Students also enjoy two compulsory study abroad trips in grades 9 and 10.
ISI accepts students in any year up through Grade 12. Though we are a language-rich school with an international focus, students do not need to speak a foreign language to attend. Our language specialists can give individualized attention to high school students who need it, to accelerate their language learning.
The high school offers a challenging, multicultural program with small class sizes and a community atmosphere that offers access to competitive IHSAA athletics and other traditional high school extracurricular activities.

school day and classrooms

The high school starts its day at 8:00 a.m. and classes end at 3:30 p.m.

The student-faculty ratio for high school is around 9:1. High school classes are small, typically having between 12 and 16 students.

All high school classes are held inside the Taurel Building on our Michigan Road campus. For grade 11 and 12 students, the Taurel Building operates with an "open campus" approach, which allows students to leave campus for lunch and other breaks that don't impact classroom attendance.

100% College acceptance

Since the first class to graduate from in 2004, ISI students have annually earned a 100% college acceptance rate.

This success can be linked to the IB Diploma Program curriculum completed by all ISI students in grades 11 and 12. This "gold standard" curriculum thoroughly prepares ISI students to succeed at the college or university of their choice – and 100% of our graduates go on to attend college.