1. your child's age:
DS, 11 1/2 years
(I also highly suspect my 7 yo DS and 4 yo DD, who has Down Syndrome, have ADHD, but right now their behavior is not disruptive enough to warrant seeking out treatment.)
2 if you use any medication and if so, what meds do you use
DS was just officially diagnosed last week and has his first psychiatric appt tomorrow to start meds. However, the diagnosis comes as no surprise -- he's exhibited these behaviors since he was 3, but it wasn't until this past school year (5th grade) that his school performance took a HUGE nosedive, which is what prompted me to seek out outside help.
In addition, DH also has ADD, inattentive-type, and just started on meds for the first time in Jan at the age of 43 (started on Adderall, and is currently trying out Vyvanse.) The difference for DH has been SO profound and positive that it's making me feel better about trying meds for DS. We've already gone the diet change/fish oil route, unfortunately with limited success, and the waitlist here for cognitive behavioral therapy is 6-8 mos. long. So in the meantime we're going to give meds a try.
I am somewhat concerned about the weight loss part, though -- DH has lost 20 lbs. since he began meds, which has actually been a benefit for him, but DS isn't at all overweight and is already highly active, so I need to make sure to up his calories to compensate for the appetite suppressant aspects of the meds. I am also concerned how it may affect his sleep patterns, as DH has experienced bouts of insomnia if he forgets and takes his meds too late in the morning. Meds are not without consequences, that's for sure.
3. if your child has an IEP or 504 plan
No, but I plan to ask for an eval when school starts again in the fall, because DS may really benefit from some testing accomodations.
4. how your child does in school
DS is super bright, extremely verbal and way too talkative, creative, curious, very social, and an eternal optimist. Despite not putting forth much effort, not paying attention to directions, constantly losing and forgetting things, and only spending time on subjects that he finds interesting, he has always done extremely well in school. However, this past school year was a disaster -- he goes to an alternative school that has multi-age classrooms and was in an upper-grade class for the first time (grades 4-8.) The amount of schoolwork and complexity was much harder than before, and with no organizational skills, combined with all the inattention issues, he fell flat on his face.

Not wanting this to become a trend and undermine his academics for the rest of his school career (as it did DH's), I decided it was time to intervene via getting him the diagnosis/meds, because all his compensatory efforts were no longer enough to hold it together.
5. great ADHD resources
Wish I knew, especially since I know well that meds are only part of the solution -- he also really needs to implement strategies to help keep him more organized and on track, and all my suggestions don't seem to appeal to him, sigh...
Guin