You can go to the classdojo.com website, and click on the Sign-up orange button. This will give you options of either you want to sign-up to Students or Teachers. You'll click on Students option, where you'll again click on the Create Account link. You will be required to fill in some details, and on completion, you get to click on the Create Account button. You'll have created an account, where you'll have an access if you go back to the home page and Sign-in.