I work in a University Tutor Lab that covers content up to Calculus II. However, when a student in a Calculus III or Differential Equations class comes in, some other tutors and I will still tutor these students if they ask for it.

Moreover, some students in an Introduction to Proofs class and a intro level abstract algebra course have come in for help as well. But some tutors are more unwilling to help these students based on a cut-off point they believe in when it comes to tutoring mathematics.

This is a conversation that often comes up often amongst the tutors. Some believe there should be a cut-off right after Calculus II, while others feel it comes after Differential Equations. Even some believe there really isn't a cut-off point at all.

If there is such a cut-off when it comes to tutoring and helping students out with mathematics, where is it or should it be?