Downloading your student roster can be done on the web at https://schools.mybrightwheel.com
Once you login, you'll click on Students at the top, and then the orange Export Roster button. You will be asked to provide an email address to have the report sent to.
The reports are sent immediately, but if your school is large, this may take a few minutes. Once you receive the email, you can download the report and print. The file will contain your entire roster, but you can easily sort out specific classrooms if you wish using Google Sheets or Excel.