Hi.
The only way to know how people will react to your new hearing aids is to try them out, of course, but you might be able to avoid stress at school if you find a way to feel comfortable or at least casual about them yourself.
I'd suggest maybe wearing them around the house or even outside this summer and then when school starts, it might be a good idea to prepare yourself for some basic questions: Why do you wear them? How do they work? etc. Beyond that, my advice is to focus on being yourself--nothing's changed about you, really. And the more relaxed you are about your new hearing aids, the less attention they're likely to attract.
It sound like the new "in-the-canal" style might not be that visible to anyone but your close friends. But if someone does give you a hard time, you can always try and rise above the discomfort you may feel by joking about it or even just smiling through it.
