Chances are you'll check in both using the "Sign in with ClassLink" choice to sign in to equally ClassLink and Backpack, or by using the "Register to Backpack Only" choice and coming into your district username/e-mail and password. To inquire what your district e mail and password are, please check https://difference-between-versac79900.blogs-service.com/64632315/the-best-side-of-backpack