[DonRotolo]

It could not hurt to express your concerns to the teacher when classes start up again. Really work hard to be non-confrontational - that is, you just want to speak your concerns, since the teacher might already be aware of these and have a plan to address them.

Some additional structure is not bad, necessarily

Also, having a curriculum-based program does help enlist the support of the administration, board and parents since the results are 'valuable'.

Spend some time thinking about structure, and how you might make it work for the team. Structure does not mean "you are a programmer and must do only that", but instead I feel it means "Here is the programming you must get done - once it is done and good, you are free to do whatever else suits your fancy". Or, said in another way: We need this work done, the team is counting on you to get it done, please focus on it until it IS done".

After all, you think my boss says 'hey, just work on whatever and somehow we'll get it all done"? Try to emulate real-world processes.