My NHS has 600-700 members, so we have A LOT of things to do.
There are about 12 committees, and you need 100 points from your committee and from mandatory events to get credit. And the students in my NHS are pretty hardcore, as soon as a chairperson sends out an email the spots for the events are filled up in an hour. >_>
BUT! When we graduate, we get a pretty tassle on our hats. :]