Here is the YouTube how-to video link: https://www.youtube.com/watch?v=OshyoNxNRZI
You'll have to create a new one through Unified Classroom. Go here "classroom.powerschool.com" and click create account at the bottom. Your PowerSchool ID will be your email address.
Click "create powerschool ID"
The next page you can click "continue to Unified Classroom Sign In"
Sign into Unified Classroom with the username and password you just created.
Click on "I have a student access code" or use last years "Username and Password" you had created then.
Click continue and you should be all set.