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Officials also acknowledged that student hacking of an iPad security system last week was more widespread than originally reported by the district.
The lost devices are among iPads used last year in a 13-school trial run of the Apple tablets.
LAUSD students work on an iPad in class (KTLA)
Since then, the L.A. Unified School District has launched a $1-billion program to equip every student in the nation’s second-largest school system with the devices.
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