django-multiple-user-types-example | Django Quiz Application | Learning library

Do forms also create tables?

No, forms are used to ask input from a user. They can be "embedded" in a template, and can easily be used to for example decode the response into objects. Some of the forms directly indeed store the (updated) values in a model instance.

But a form can work for no model at all, one model, or multiple models at once. Furthermore once the form is gone, the data it carried is gone too (unless it is of course stored in a model, or in a file, or another persistent sturcture).

Where do classroom_user_user_permissions come from?

This is because you probably defined a ManyToManyField between a User and Userpermissions. So not all tables directly map on models. Some relations require extra tables, since these can not directly be stored in one of the two tables.