Basically if you are having trouble understing his speech or he is not conversating with you properly then speech is needed. My sons,speech has picked up a great deal, but socially he cannot hold a conversation with a wall.

It is good the school is addressing your child's issues because a lot of them just wait until you ask to do anything. You do have a right to ask for updates and call for IEP meetings when it is needed, so I would speak to your case worker or contact and let them know that you need to address the issue, and they can then set up the meeting.

It is very common for our children to be very smart but have problems in expressing themselves especially through language. They tend to know and understand more than we think a lot of times.

go back and ask for a speech/language pathologist to begin services during school day.