Using multiple forms during user registration.

Using multiple forms during user registration.

I am trying to create a solution for registering children for swimming lessons. I would like to be able to split the registration over multiple pages since it is long. I have created separate forms where i collect the parent information, then the child information, then the class registration. Is there a way to pass say a customer id from one form to another?

I may change the order to be Child info first that way it is a one to many relationship with childinfo being the "parent" to parentinfo as well as each class they register for.