As a kid, I think you need to go through channels. You want to ensure that a) the school won’t shut down your ideas and that b) any funds you do raise go to the areas you’re trying to help, and not help replace the lockers in the visitors locker room.
You’re going to have to narrow down your focus if you want an OK, so think, what’s your highest priority? The microscopes? The field trips? Pottery clay? You’re going to have to choose one area and address it.
It would probably help if you had some idea of the costs necessary, so after you decide on one project, hit the internet. Speak to your teachers and come up with a rough idea of the amount of money you’ll need to accomplish your goal.
Do you have an active PTA (or whatever it’s called in your school?) Do you have Student Government that does fundraising? If not, I would start by making an appointment with the principal. Yes, an actual appointment-- go to speak to his secretary, and find a time when she can fit you in. She’ll ask what it’s in reference to, and you tell her: you want to try to look into ideas that the student body can use to raise funds for _____.
Whoever you speak to, you’re going to have to have a clear idea of what you want to pitch. Do you want a GoFundMe page? (Administrators may shoot this down for one reason or another, so be prepared with other ideas.) What sort of fundraising are you considering, and what sort is likely to be a success in your area? You’ll want something that has financial transparency-- where you can account for the funds as they come in. So you’ll have to speak to someone who has done fundraising in your district to be able to counsel you on the financial end of this. You’ll want something with a real chance of meeting your goal. And you’ll have to consider the timeline-- if you’re a Senior, this may not get the funds in time to be of real use to YOU and your class. I don’t think “FAST” is going to happen, not on a project of this magnitude. (Here’s what I mean: teachers in my school got a memo the other day advising us to hand in next year’s budget numbers. This year is already in the books, we’re looking at next year’s numbers.)
Plan B, for immediate results: Could you find a Science teacher willing to do one or two Science Field trips? You could do the research, find something reasonably close and reasonably affordable. Or, far cheaper, could you look into having STEM professionals come to your school and give talks after school to the any interested students? Do you have alumni in the medical field, in research, in engineering, in architecture, in technology? Parents of current students in those fields? This would be a project you could organize now, for January or February, to benefit members of your own class.
Good luck.