Many people join school clubs to put it on their resume. That's great and all, but there is much more to student clubs than just being able to say that you were an active member of the "Young Investors Club" on your resume.
There's networking... I go over how school clubs are the easiest way to "infiltrate" and practice your networking skills with people who are your age and who you're probably more comfortable talking to compared to a senior executive at a company.