using a phone inside the classroom

Some teachers put a row of such laws . for example prohibited eating and talking and using the phone inside the classroom. But Japan is strictly forbidden to bring the phone into the classroom, and I will put for you  a section of the video when the student response time of the phone call explanation.
I leave you to see ..





http://www.youtube.com/watch?v=FjHWiIXOJ7k&feature=related