Not according to the multiple experienced attorneys and trained US diplomats I've asked about this question. I'm pretty sure they know more about this than you do.
Since natural-born citizenship can only be affirmatively renounced (see Perkins v Elg) the college records are not relevent.
It's hard for me to imagine a more affirmative renouncement of citizenship than to receive aid as a foreign student or to obtain a passport of a foreign power claiming citizenship in that country.
Er, what ?
The Citizenship Act of 1986 seems quite clear on these points.
If a foreign passport was issued to him it does not mean that he has renounced US citizenship. One must also get the State Department to issue a statement to that effect.
And there isn’t any evidence of this at all. And of course you cannot ask for proof of the non-existence of a foreign passport.