Received this kind of emails twice so far since the last week.
“This FAFSA correction was made by the financial aid staff at your child’s school.”
Any idea how to figure out which college made changes? Thanks.
I have the same question - ours was updated twice, as well.
So did you know which college made such changes?
No…that’s why I said I have the same question. 
I believe you can call the FAFSA helpline to find out. Or you can call each school to ask whether any changes were made. Is it even necessary to do so? Were incorrect changes made?
FAFSA can tell you what was update 
My EFC was adjusted by about 100 USD. Not a serious deal, just curious.
Review your information line by line to see what changed between the initial FAFSA and the adjusted FAFSA.