What I do with a student the first few flights depends a lot on the student.

I usually won't do a loop or roll with them until they demonstrate an ability to fly a striaght line, make a turn, and get the wings back to something close to wings-level.

Some guys do this naturally, some students are always s-turning their way down the field, and never do seem to hit a straight line.

If a student asks, I'll usually set them up for a loop and/or roll. If I don't think they can handle it, I might say "No", but that's going to be rare, since I can pull it out if things get out of hand.

I've had students who were always pushing, and I had to slow them down. And I've had students who were too timid and I had to push a bit to get their confidence up to match their flying ability.

YMMV of course.