Since school is out for the summer, you will have to wait for the start of the new school year to fix this, unless you can approach someone at the school during the summer school session. Talk to your school councillor, and tell him/her that you already know Algebra II, so you need to take the next level next year, instead of that. Ask him/her to arrange for you to be tested on it, so you can prove you have already mastered Algebra II and are ready for the next level. Because you may have to wait until the fall semester starts, you may have to spend a few days in Algebra II, until this can be sorted out, but don't worry about it.
And congratulations on being so good in math.
I can handle basic math okay, but higher math is beyond me. At least all I need is the basic stuff, though.
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If a man does not keep pace with his companions, perhaps it is because he hears a different drummer.
Let him step to the music which he hears, however measured, or far away.--Henry David Thoreau