No, because these belong to your independent account.
If you want to move a class of students into a school, you'll need to create a new class within that school and give the class key to your students so they can join it. Please note that any progress they have already made will be transferred across to the new class, except for progress reset classes where this isn't possible.
For more information on Progress reset classes read: What does the ‘Progress reset’ label on my class page mean?