Each Classlist site provides a secure closed platform unique to your school.
Access to each year group's data is restricted to other parents in the same year group at the same school. This means can only view information relating to their school – and to their year group. Your School Ambassador/s, School Staff Admin (if you have any) and your specific Class Admin will be able to view the data you submitted upon registration, although this is purely for authentication purposes.
You can also specify who sees what information in your account's privacy settings. The only thing that needs to be visible to everyone in your class is your name and the name of at least one child, to help identify you.