Ken Yeh thought his school was buying software to keep kids off of certain websites.
What he didn't know was that it could help identify a student who might be considering suicide.
Yeh is the technology director at a private K-12 school near Los Angeles. Three years ago, the school began buying Chromebook laptops for students to use in class and at home. That, Yeh says, raised concerns from parents about what they'd be used for, especially outside of school.