Neither a teacher nor a native speaker
In my opinion, "who" is OK. The following attributive clause describe students. But I'm also waiting for someone to tell us if "to" can be used here.
If "to" is used, what is the logical subject of it? I think it is not "students", but the whole sentence "to provide additional input…………" Then the meaning of the sentence differs.
What I want to ask a step more is that can "to" be used here grammatically right?
Student or Learner