The Student Locator Project, which launched on Oct 1. at a San Antonio high school and middle school and could be extended to as many as 112 schools, tracks student whereabouts using embedded RFID (radio-frequency identification) chips on student ID badges.

PC World reports:

"Unlike passive chips that transmit data only when scanned by a reader, these chips have batteries and broadcast a constant signal so they can track students' exact locations on school property, down to where they're sitting -- whether it's at a desk, in a counselor's office, or on the toilet."

http://living.msn.com/family-parenting/school-uses-id-chips-to-track-student-locations-1 [2]

I think I'd have a fit if one of my children were required to wear such a thing.  It just seems way over the top (not to mention a huge waste of money, imo).   What do you think about it?