Advertising clubs at school?

Hi everyone! I’m starting my school’s SciOly team, and we’ve got all of the registration stuff ready for us to fill, whatever. Now all I need to do is find members to join the team with me. My school isn’t very academics driven so I’m worried about finding kids to join. We do get around 35 members for DECA and 20 for Speech but the Academic Team (the actual like Quiz Bowl structured competition) only had 11 and Spell Bowl only had 10. How do I advertise/sell the SciOly so I can get 15 members?

ehh all electives I think have an equal share in our school. Basically in our school anually we have a clubs and activities booth in which people sign up for the clubs and all of the clubs are usually present at the same time. If you do have one of those booths, just try advertising the best way possible

Posting club posters on Instagram and Twitter might work.