ACT High School Codes Look-Up

To find a high school code, select your country, and a state, territory, or province if US, US territories, or Canada, and enter either the city and/or high school name. High schools are listed under the actual city name, not metropolitan area.

In addition to searching, you can also download a list of institution codes for high schools, colleges, and other institutions.
Last Updated: October 24, 2025
Download: ACT Institutional Codes File

Note: This file format has recently been updated for improved usability.