You can piggyback in through the school's 501(c)(3) status, which can be granted to an educational institution. But, they have to include you as part of their status. There are a few ways to fill out the paperwork, but you do need their form.
Even if for some reason you are not deemed part of the school's tax exempt status, or you have a hard time getting the paperwork to prove that you are, you can take advantage of a friendly tax-exempt organization's fiscal sponsorship. I am sure that in your club you have plenty of "pro" online researchers, so shame your unresponsive school administration by finding another org willing to support you with their fiscal sponsorship,
Best of luck!
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