Inventory management: We've heard of it...
When LAUSD bureaucrats subsequently demanded kids return the tablets, only two thirds were actually handed back.
...and they don't have records of exactly who has them? Or a signed agreement from a parent/guardian who agreed to pay for it in the event of loss / damage?
When I was at school we weren't even allowed to take TEXTBOOKS home without having signed for them, what's wrong with these people? Kids BREAK things. It's practically a defining characteristic.