Posted: Jan 17, 2011 5:11 pm
from what i've read on the wiki page that nineberry linked to,these two were in the same school but not in the same class as their age would suggest.
Wittgenstein and Hitler were born just six days apart, though Hitler had been held back a year, while Wittgenstein was moved forward by one, so they ended up two grades apart at the Realschule.[31] Monk estimates they were both at the school during the 1904–1905 school year, but says there is no evidence they had anything to do with each other.
http://en.wikipedia.org/wiki/Ludwig_Wittgenstein#Jewish_background_and_Hitler