TRA wrote:
What records about my students do I need to keep for the
TSA? I know what the FAA wants.

Assuming you are a U.S. citizen-only CFI (you would have done more with
the TSA if you were authorized to teach non-citizens) you only need to
keep a copy of their proof of U.S. citizenship (passport) or a log book
endorsement that you validated it.
You are also suppose to know that if anyone asks you for primary,
multi, or instrument training that you need to refer them to a TSA
authorized CFI (or become one yourself). TSA authorized CFIs (like
myself) have a login account with the TSA website and can process
foreign students.

-Robert