Question about 501c3 for FRC

My team is currently trying to obtain 501c3 status for our nonprofit booster club (so we can get tax-exempt donations), and right now we’re looking to find the correct NTEE code, but there doesn’t seem to be one that’s exactly right. I’m curious what anyone else who has established an organization has categorized their nonprofit under?

Thanks in advance!

B112
“USE B112 or B122 for K-12 fund raising; Example: school booster
clubs” from http://nccs.urban.org/sites/all/nccs-archive/kbfiles/322/NTEE-CC-Manual-2007a.pdf