Ukulele class next year?

The planning for next year has begun at school. The powers that be have tentatively scheduled me to teach on section of Ukulele as an elective for 6th graders next year. I am now looking into getting 30 ukuleles for the possible class and thinking about how to teach and manage the class. It would be fun to actually teach a class for students, everyday. I would probably keep the ukuleles in the classroom since we meet everyday.