What to do if..

we have just found out, after 2 years, that our child's school has got a proposed EHCP (how is it possible that they do not have the finbal version of the plan?) where some important recommendations regarding therapies are missing? Who should we blame for this negligence? The LA or the school? Should we receive any compensation in regard to this situation? How to start the complaint process? 

We would be grateful for any ideas.

Thank you!