"Grade skipping him now at age 5 (at the time) may cause a problem when he's 15 and all his classmates are 16 and getting their licenses"

oh, I am tired of hearing that comment as well...I heard it from DS7's First Grade teacher as well when we gave her the full psych's report that stated he needed 1, possibly 2 grade skips in math and reading. When talking with a friend the other day, this topic came up and she said the exact same thing. How do they know!