Schedule student to join a class at a later date

What specific challenge or problem does this idea solve?

When we want to move children to higher level classes at the start of a new term it would be good to be able to schedule a start date as well as adding the drop date to their old class

How should this work?

another drop down to to schedule join/start date

Who will benefit (Admins, Staff, Students)?

Everyone

How will this change impact your daily tasks or overall experience?

Allows better management and class monitoring