He phoned another parent and shouted abuse at her today.
There was an event on Tuesday afternoon to celebrate the Olympics. The children put on a show and it was lovely but unfortunately the weather was very hot and the school had not put suncream or hats the children. They did not provide shade or water at any point. As a result, several children have sunburn and my friends daughter has sun stroke. Lots of parents complained to the school about the lack of sun safety and basic common sense (I did not complain at this point).
There was also a party arranged for Friday afternoon to celebrate the Jubilee. This was to take place on the school field. The Head's response to the parent's complaints was to write to everyone, stating that the party could no longer be held outdoors and would be held in the hall instead. This means no room for the parents so we are all 'uninvited'.
He has also threatened to cancel Sports Day.
He went on to claim that all the children who did not have cream or a hat had not brought any with them to school. DS took both a hat and cream to school and was not wearing either. He stated the weather forecast had been 'overcast' therefore he assumed it was safe and went ahead with the event and it was not his fault that children got burned.
DS is very dissapointed that his parent's have been uninvited and was really looking forward to the party.
That's all pretty crappy, he obviously has no common sense, but the worst if it is that today he phoned another parent and told her that it is all her fault the party has been cancelled. That she shouldn't have complained, that she had lied in her complaint (presumably he thinks the child is not really ill, depsite the parent including the child's prescriptions in the complaint letter!). He called her names, claimed that she likes to make up things wrong with her children and hung up on her.
She called me obviously very distressed and now feels that everyone is going to hate her for complaining that her children got burned. 
So he basically cancelled an important event for the children, just to spite the parents who complained, then targeted one specific parent and phoned her to shout at her!
I have made a complaint in writing about the cancelling the party and suggested that common sense would be to just put a hat on the kids! But after hearing how he treated my friend I am scared of how he is going to react to the letter.
I don't think I can trust this loon with my child. Coupled with the way they have let him down with his additional needs, and the way the Head has spoken to me in the past, I just feel it's wrong to keep DS there.