Melissa,
I teach students with learning disabilities and AD/HD (I have for 11 years). It sounds like your son has been referred to child study for testing. In our state, we don't test for AD/HD, a doctor has to diagnose it. Please, Please don't hesitate to PM me or reply to this with questions. I consider myself a child advocate as many parents who have children with special needs need someone who is knowledgeable about the law. It will help you to know what to expect when your child is going through the evaluation process.

I love teaching students with AD/HD! Yes, it can be very challenging and stressful, but it is so rewarding. Read books by Mel Levine, a child psychologist who has written a few excellent books (my favorite being Laziness is a Myth). They are not specifically about AD/HD but describe different aspects of students who learn in different modalities.

I'll give you a helpful technique that an occupational therapist taught me. This helps if your child is really hyper and needs to calm down, like before bed. Get a beanbag, the ones kids use to sit on the floor, and a yoga ball (size small would be best). Put the beanbag on the floor and ask your child to lay down on it face down. Then take the ball and roll it up and down the length of your child, from head to toe. You want to keep pushing the ball down so your child will feel the pressure,
which is what is supposed to give the calming effect. The OT called it getting pancaked. Some kids like a lot of pressure, some like it very light. Your child will let you know. It really works, try it!