mikethemathteacher Hello! Thanks for reaching out about this. If your classes were accepted to the challenge, you should have received an email on April 22nd with subject line: "Cleared for DS Challenge, starting May 6th." That email has a section titled "Student registration in Canvas," which includes copy-and-paste directions for students to sign in. If you didn't receive the email, I'd suggest checking your spam folder. If it's not there, feel free to shoot me an email: youngsaver@skewthescript.org