Spelling Out the Year on a College Diploma

Hibernicus is correct. I have never heard two thousand ten, one hundred fifty-five, etc, except from American speakers.

It seems from the discussion here that both styles can be found in American speech, but I think most (all?) other varieties of English use only the style with “and”. “Two thousand ten” is distinctively American, and not universal even there.

Do Brits not say “twenty ten” either?