The best solution is probably as follows:
1. Back up the data
2. Reformat the flash drive in ext4 filesystem (probably by using gparted)
If mounted with appropriate options, the files on the flash drive will keep their permissions across computer labs.
eg. sudo mount -o remount,exec /media/YOURDRIVE
google: allow executing from flash drive linux|ubuntu
google: executing ntfs linux
(I can't post http links outside this site as this is my 1st post here, Sorry. But the top results shown in the google searchs are quite relavent to the question.)
Last edited by WorldPeace; 04-17-2012 at 12:58 AM.