Getting Schooled: Would you trust the students to organize a prom? (Room 222, 1970)

 From season 2 of Room 222:

Nicole Jaffe (Scooby-Doo, Where Are You?) returns, this time playing a different character, one who helps organize a prom at Whitman High, but Bobbie (Jaffe) doesn't have a date..........!

Here's "What Would we do Without Bobbie?":

By the time I was able to go to prom, my folks couldn't afford the tickets, and instead had me bowling with them in an adult league my senior year. Traditionally, the school faculty not only hosts the prom, but also does most of the organizing and promoting.