He sounds like a very sweet little guy.
But I would be prepared for a diagnosis of ADHD, really. His symptoms sound classic, and for him to come to the attention of TWO separate preschools, with behaviors that are so far out of the norm that they call and tell you, that's pretty telling.
My oldest was exactly like that, and although you cry a lot at first, he's a terrific guy. Sweet natured, smart, delightful.