The following are websites that the student can log into just like they do at school. They use the same username and password as they would if they were logging into a school computer. Your student's teacher has this information.
SSO (Single Sign On) gives access to Learning.com, CK 12-Foundation, Khan Academy, Discovery Education, BrainPop, BrainPopJr., ReadingEggs, Mathseeds, MobyMax, Think Central, Follett (Destiny), Renaissance Place, Google Drive, Google Classroom and Google Calendar with one login.
Raz-Kids.com is a reading, writing & science website (Classroom teacher has to have this set up for the class)