how do colleges know if you submit all the standardized tests you took?

Applying to College
1

just wondering…

2

Some HS’s post your scores on the transcripts, so if you are sending transcripts, they will be there to be seen.
Honesty is the best policy. Schools usually take the highest score or will superscore. They want to admit you are not trying to find a reason to reject you

3

But is the school requires you to send all scores and they discover that you did not, that is a good reason to reject you.

4

Or if found out after acceptance to throw you out of school.

5

Or if they find out after you graduate, they revoke your diploma.

You should assume that colleges have some tools, some of which they will not share with you. A good rule of thumb for anyone planning on deceptive behavior in terms of getting caught, the question is more likely “when” not “if.”