Welcome to the site...I usually have some helpful advice to offer, but sadly, not for this...I'm too old to remember high school :)

that's alright & thanks!

I will tell you one thing, though...a job is just as bad as a class...

yea i bet , and it's not really the fact that im lazy to do hw or class work, it's just people in there, i just start feeling so overwhelmed and start shaking and ugh

Do you have a medical doctor?

My daughter is 15 , sophomore too and she tells me crazy things. High school wasn't this bad like 21 years ago. She tends to be a "loner" cause she ain't one to conform. I told her good, you don't need that bull! Hugs ❤

Go to the school councillor or your medical doctor. You might be helped by a small dose of anxiety meds. Look for books at the library on social anxiety or shyness. You might learn some tips you can use to cope better being around other people. I was extremely shy. Had social anxiety disorder in school. Just take one day at a time. Eventually you will graduate. Do fun, calming stuff when not in school.

The problem with anxiety is mostly the chuntering, which is to say, sitting around, saying how bad the world is now, and how nobody wants to be around you if you're not popular, and all those other things that are NOT getting up and saying hello to new people.

We rationalise away our cowardice, talk ourselves out of doing anything about it, and manage to dump on those kids over there having a good time whilst somehow making ourselves seem higher quality and less superficial. I mean certainly, it's a great 3 for one deal.

But it doesn't really make up for the isolation, and in fact it only increases it.

The best thing to do is what Tired says. Deal to the anxiety. Talk to the counsellor or doctor, see what can be done about getting you over this social hump.

Welcome to the site! High school is definitely really tough!! Everyone is trying to get to the 'top of the food chain' and it becomes really hard to be yourself and be comfortable. Know, however, the even the popular kids are just trying to figure out who they are and could be just as uncomfortable with themselves as everyone else.
I would encourage you to be yourself! Hopefully you will be able to find kids that you can connect with and relate to that can be supports for you through these grueling years. Have you found any extracurricular activities that you are interested in? That could help you meet people with common interests as well as possibly help with some anxiety.
I am sorry you don't feel your parents would take your anxiety seriously. What is helpful for you to calm down when you do feel anxious? I know for me journeling, doodling, and coloring are really helpful (and these are things you could do while in class if need be.. and if teacher permitted)
Good luck! I hope you are able to find a comfortable place in school... it's not easy, but know that you aren't alone in your feelings of high school being really hard socially!