If you have an existing student account, you can now sign in with your Clever account to link them together.
Go to play.prodigygame.com and click on "Login".
Then, click on the Clever button
From here, enter the Clever information for your school.
Then, enter your Clever login information.
Click on "I have a Prodigy account"
Enter your Prodigy username and password.
And you're done! You can now proceed working with your account!