The California school that was testing an RFID-badge system to track students, has halted the program. The company developing the system -- that had asked the school to beta test for them -- has pulled out. Details here.

I can't say I am surprised. The United States is just not ready for anything that sounds like forced people-tagging. And if you were going to start such a program, you'd be wise to do it with consenting adults, not school children.