Use the email and one-time password your school shared, then set your own password.
Open the URL your school shared (for example yourschool.campustics.com) in Chrome, Edge, or Safari.

Type the email and temporary password from your welcome email, then press Continue.
If the field turns red but your details are correct, it's usually a stray space — retype the password.
You'll be asked to choose a new password right away. Use at least 12 characters with a number.
Admins land on the main dashboard; parents, teachers, and students each land on their own portal.

The first time you sign in, a 2-minute interactive tour points out the sidebar and key widgets. It only runs once.