That doesn't sound like sneioritis....that sounds like a real issue. Doesn't sound like you are simply bored and choosing to skip, but rather a real problem that needs handled. And, if you are planning on going to college, that should be dealt with right away because college only gets tougher. What do you think the root cause of your struggles are? I understand depression but, is it something specific about school? Is it really just because you are at the finish line? Is your time in high school not enjoyable? Is it that you don't know what you will do after graduation?

There are a lot of reasons that could be simmering and you not even realize it, y'know? Is there one issue that maybe sits in the back of your mind all the time?