Graduating class size?

<p>how accurate does the graduating class size have to be?
I have a copy of my transcript and it says I have 412 kids in my class (at the end of the junior year) but I know for sure that there are going to be less than 400 kids graduating since a few dropped, a couple moved away or switched to private school, and like 20 are graduating in January.
Should I just put 400 as a guess or actually write 412?</p>