>3. A guide or companion whose purpose is to ensure propriety or restrict activity<
What makes you think the 7 on this trip were doing this? They were on the trip.They had no authority to tell these students anything.Notice none stayed behind and assumed any responsibility after she turned up missing.
Assumptions like you have made are the the same ones made by many parents who allow their kids to make trips like this.
I also notice that we haven't heard boo from the "chaperones". Guess they are laying low.
Holloway was known as a top student and tireless worker at Mountain Brook High School, where she graduated last month before leaving for Aruba with 124 other seniors. Twitty said seven adults went along as chaperones.Missing girl called dependable but naive
You won't like it, but they went along as CHAPERONES!