NOTE, If you are using PowerTeacher Pro (non Java gradebook): 

>>>>> Click here for instructions  <<<<<

Otherwise follow these:

You will have to do this on every computer that you run PowerSchool on for the first time. You will also have to do this after all PowerSchool Updates.

• Open up the PowerTeacher website and click on the Installer button (not launch).
• Click Download Installer and then once it downloads run it.
• Click Run, then Install, the next, finally, click Finish.
• Then go back to the web interface and click Launch.
• Then run the file that it downloads. This will give you a desktop shortcut and you can just run it from there after that.