Our level 3s have been doing typing.com in computer lab. They can still logon and work on it at home.
username: firstname.lastname
password: FirstnameSSIDnumber (capital letter of first name and no spaces)
Example:
username: john.doe
password:John1234567
Typing.com is free so level 1s and 2s can get on. Parents you will just have to create an account for them on your own.