If you have something specific you are stress out about in school, you might talk to them about that, see if they can hire a tutor for a subject or two that are too much for you or something?

I had a French tutor my mother hired in 9th grade, an older girl (this was back in 1963-64, before learning centers or anything :-) and it changed my French grade but also the rest of my life (gave me more confidence in myself) so maybe think of some smaller way someone else could help you and see if you can talk to them about that issue specifically.

We can only work on one thing at once anyway so work on a particular school-related problem (which I suspect would be easier for you to talk to them about?) and see where that gets you and if that helps relieve some of the pressure. A good Huntington Learning Centers or Sylvan tutor might be able to help break up some of the perfectionism, for example, too. A little relief can go a long way!