What 80's kids movie is this?

Question

There's a kite fight and the neighborhood bullies have one designed like a shark and they try to pop the balloons tied to the chair and the boy flies away and that weird old professor from all of those 80's movies tries to help him "find himself" because he's a nerd who lacks self-confidence. What movie is this?????

Answer 1

Ah yes...

The Boy Who Could Fly (1986)
advertisement Milly and Lewis, and their recently-widowed mom, Charlene, move to a new neighborhood. Once there, they all deal with a variety of personal problems, but Milly finds a friend in Eric, her autistic next door neighbor. Eric has a fascination with flight, and as the story progresses, he exerts an enthralling force of change on all those around him.

Answer 2

Yup. The Boy Who Could Fly