I too would wonder about the ADHD, at the present, cause of Bipolar having similar behaviours, but a Pdoc can be the one determine that,with his or hers evaluation. You can't go on the school psychologist's DX, though it can help, but a Psychiatrist should be the only one to make the final DX and set up treatment plans. I am mild Bipolar-II and mild ADD, my Pdoc stressed on treating the Bipolar and only that first, then after 6 yrs of stabilization,being on mood stabilizer, he allowed me to add Concerta for my ADD.
He prefers Concerta for Bipolar vs other formulations, it's timed released,so patient doesn't experience "peak and valley" effect, which is very crucial to Bipolar depression,in Bipolar-II's, well at least it was in my case.
Concerta is working fine along with my mood stabilizer, making my life more managable.
I am glad this child is getting this medical/psychiatric care, sadly young children with Bipolar and/or ADD, get or use to get marked as a "bad kids",never paying attention or too talkative/disruptive. It's a little better now, but I do not like hearing and seeing(I use to be a teacher's aide)kid's getting wrongly DXed as ADHD/ADD but actually are Bipolar, treated with the meds. not for Bipolar, it can mess the child up more. Oh well, I do not know if any of this helped. I just wanted you to know, one can have Bipolar as well as other disorders, combined, but many can be sucessfully treated with meds and/or talk therapy.
It's not cured but treated,stabilized, allowing someone to carry on their everyday life with least complications.
I wish you lots of luck,love and healing.

Rosanne