[Deemoney]

Question
I have a tough question for you, I don't know if you'll be able to answer it for me, but here goes... Back in the early 80s when I was a young girl I used to watch a movie on cable all the time, I don't know who was in it, or what it was called, but it was about a woman teacher who taught in a one-room school house (it was set in the current time) in either New Zealand or Australia. She and her entire class of about 14 students of various ages were kidnapped by men wearing Walt Disney masks, I particularly remember one wearing a Donald Duck plastic mask.  The teacher and her students were held in a big dark cave with only their lunch kits for food, the teacher and a few of the older students found an escape by swimming through the cavern lake and out to an opening on the outside, and managed to get everyone out of the cave and elude the captors. It seems that at one point they went to a farm house for help, but only managed to get the kindly couple killed as they tried to help them. Towards the end of the movie, the entire class is being chased through a forest and one of the older girls starts her period.  I know that that's not much, but it's been killing me trying to remember the name of the movie... if there is anyway you could help, I would greatly appreciate it.

[vallerina]

I think it was called "Fortress".

[StacyP2006]

It was Fortress..
Fortress (1986) (TV)