M.,
I don't know why teachers even say those words unless they are saying: I suspect that your child has a disablity and I am making a referal for some educational testing because if I bring it up, I am obligated to make such a referal." It just burns me up.
If she wanted you to work with him on his behavior, then she should have put it like that. I would document it, and I would ask her to do the same. By documentation, I mean functional documentation, noting in writing what happened just before he got up. You will be glad that you have it for two reasons. If this is going to be a problem, you will have evidence of exactly what the issue is so that you can get a proper evaluation. And second, you can show that the inclass and at home interventions have not been sucessful if they don't work and you can get intervention sooner. Once a referal has been made, the teacher will be called upon to do this anyway, so you are saving a step.
I think that the issues the teacher has described are not "attention" they are impuslivity and hyperactivity. He may just need to move, and has not developed the abilty yet to stop himself from doing his thing. That is the skill you need to help him with, and that might be a hard task.
It kind of sounds like redirection could be helpful, and it will be a test for you to see if you have an issue or not, but from a parent with kids who have issues, you parent the kid you have in front of you. If you do have a child with impuslivity and hyperactivity issues, you are doing a good job by finding easy solutions at home that keep the peace and work without a battle, even if that means letting him get up from the table to wander and having a loose lifestyle. You may be picking your battles well without even realizing it! Try to encoperate as much positive renenforcement as you can instead of punishing him when he does not comply. Sucess breeds sucess, so set him up for as much as you can and catch him doing what you want.
As for not discussing medications, you are right on. Medications are but one part of treatment for ADHD, but before you could even think of treatment, you need to confirm the problem, then have a full evaluation-medical, neruolgical, educational...(both at school, and privately-never know less about your son than the school.) After you have a proper medical diagnosis from a Developmental Pediatrician, a Board Certified Child Psychiatrist, or a Nuerologist then you should follow their plan and access medical, behavioral, theraputic, and educational interventions. Medication is never approriate alone, and never from a breif evaluation at your regular pediatricians office.
Finally, don't get caught up in the maturity issue. This has nothing to do with what you are talking about. You have identified the issue: He gets up impulsively and wanders. Get a base line on how many times this happens now, and implement more structure at home and keep a close eye on what they are doing at school- because, bottom line, this is a school issue.
Good luck, and I think you are doing a fine job, you seem to be picking the battles that matter, and sometimes, that is the right thing to do.
M.