Once generated, this Key value will be needed to access the APIs. You can generate multiple tokens and they will all be valid for accessing APIs.
Check access of APIs by clicking the gear button and if access is turned off then turn-on access and update it.
For School Details, do this:
Your_opensis_URL/api/getSchoolDetails/academicYear/{ academicYear }
Example:
If API Key = TwP3Falr28vDS6cX8R8wCqCheopNzW4psUO9ibQaR/nsxCWlgpMvoQTfQmoTh78UfD
academicYear =2021
Then
URL will be
Screen Shots of JSON data returned to the browser: