What can happen to him? What is the possibility that he wont get sent to jail?

lots of further questions that need to be answered, you should quickly consult an attorney.

Do I have a case?

Sounds like you should consult an attorney. we cant recommend specific lawyers but you can use the lawyer finder tool here on avvo.

You shouldn't have given it to him in the first place if you're that concerned about it.

How could this have happened and how do I resolve this

Stop everything you're doing right now and call an attorney, we cant recommend specific lawyers but you can use the lawyer finder tab here on avvo,...

What can I do about this awkward situation. I have already explained to the officer who called what went on with those two.

Stop talking about the case with anyone besides the lawyer you're about to call, we cant recommend specific lawyers but you cans use the lawyer...

Is the restaurant responsible for compensating me for my sick time and/or pain and suffering? Has too much time passed?

sounds like a tough case, but worth pursuing, consult a lawyer asap.

Can a school be held liable for an injury suffered by a child?

Sounds like a possible case, consult a lawyer

What should i do

Consult a lawyer ASAP, we cant recommend specifics but you can use the lawyer finder tool here on avvo if you want.

Consult an attorney directly about this as there are a lot of factors that will come into play, we cant recommend specific lawyers but go ahead and...

How much would me and my minor daughter get

you're paying your lawyer for a reason, if you aren't completely satisfied with your current lawyer you can always consult a new one.