Well, if it's that bad, then the plane should be grounded immediately to check what's wrong. And to let a student take the first flight after those kinds of problems, that would be grossly irresponsible.
Sternone/nanocas, there's an additional pre-flight check that I was taught when starting my aerobatics course. While doing the walkaround, once you've arrived at the rudder, walk back from the aircraft a meter or two. Squat down low so that the top of the main wing almost, but not quite disappears below the top of the elevator. The place where those two top lines intersect should be exactly the same, assuming you are squatting exactly in the aircrafts centerline. This is a very effective, yet very simple check to see whether the aircraft hasn't been bent somehow. I don't know any other check that you can perform as a pilot without taking out a spirit level and the book with tolerances.