I've also dealt with a similar problem. There's so many issues here. First and foremost is what is happening to your child's education? What is going to be done about his behavioral regression? How can you get good information about what really happened in this incident? And finally, is the school required to notify?

In my mind, the first 2 questions are more important than the second two questions. So I would spend more time on those. First I would make an appointment with the principal to find out who will be teaching your child and if they are qualified. Is this temporary? How are the training the person? etc.,

Then I would request an IEP meeting to discuss your son's regression. Make sure the behavioral specialist comes to that? Identify what needs to be present in your son's program for him to be successful.

Now the last two questions regarding finding out what happened and should the school notify? Maybe and maybe not. I know this makes us (parents) crazy. It's wrong that this information is kept from you. I'm sure there's injustice involved. But the bottom line is that school districts close ranks when an incident happens so you would have to go your PDA in order to force a disclosure. It could take months. Probably what happened is something with another child. Because teachers don't disapear for such a minor infraction. Schools will quote confidentiality and it will be a battle. Is it worth it?

Unfortunately,I have had lots of experience with DFCS. We have had them called on us multiple times, but all have been found as false accusations and we were cleared. I was just like you: Out of my mind crazy over them interviewing my child behind my back! But, looking back, I am able to see the reasoning why they do it that way. Not that I'm a fan of this policy, but they frequently have to interview kids who are being abused by the parents and teachers that are supposed to be protecting them, so I can understand DFCS not notifying them beforehand. While it is scary to go through the process, just keep in mind that they are there to protect your child. It is a parent's nightmare to get that dreaded call from DFCS, but try to work with them. We did and now when someone threatens to call DFCS on us about our kid's behaviour I laugh and tell them to ask for Jessica. That tends to make them think twice. The investigators are just gathering facts about what is going on. They understand more about special needs issues than you think. Our investigator found that my son's behaviour was only at school and was being instigated by an adult in the school who was picking on him. Soon, your lives will go back to normal (well, as normal as it can be for us).
In the airline industry, when they have an emergency aboard a plane, they say to pur on your own oxygen mask first. This is so you will be thinking clearly and able to help those around you. I use this as my motto when things get rough. Put on your own oxygen mask first. If I am out of sync and frustrated, my son will be, too. Just keep calm and you will be fine. Feel free to contact the DFCS office and talk to them about what happened, calmly. You may find them to be more helpful than you initially think. Good luck!

I would think that you would need to know what happened in order for the behavior specalist to figure out a way to take care of the behaviors. Do you have a parent advocate with the school system? If so, perhaps request that she/he is present in the IEP as well.

@ lipenata: my mistake, I'm sorry. Teacher's are city employees as well as principals. It would make sense to me to report it to the school board then follow Jill-Longenecker's recommendations. Of course, state's differ on education policy and my experience has been in Missouri and Arkansas.

Ok. I got the acronym wrong. The federal government funds a protection and advocacy center (P&A) in every state. Here's the link for Florida's. http://www.disabilityrightsflorida.org/

Here's a link to find the P&A for any state.
http://www.ndrn.org/en/ndrn-member-agencies.html