We have Viglen's at one of the other schools my company supports. They seem quite good actually, difficult for the kids to get into for sure...difficult for me to get into sometimes! But then it's also partly due to the kids we have at this school, in general vandalism is a lot worse at the school where we've had thefts than the other schools we support.
In total this week we had 3x 4GB sticks, 3x 2GB sticks & 1x 240GB SSD get nicked. RAM isn't so bad but those SSD's can be quite costly, especially with how easy it is to get into the back of these machines. The other thing we're struggling to grasp is when the kids are getting chance to do this. The teachers insist to me that the rooms are locked between lessons, or when not in use. I can't imagine these are being taken during lessons either, something doesn't quite add up!
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Look like these might be a good idea. Simple and cheap, exactly what the school will want!