If the timer went off before we were done, we wrapped up our last talking point and I reminded them that they could come see me outside of class hours if needed. (edutopia.org)
You can't in schools, as it would violate an individuals right to have religion thrust upon them (same reason they don't allow praying during class hours). (religion.blogs.cnn.com)
A 2012 study found that middle school students who started class an hour later than usual saw their standardized test scores increase over 2 percentile points in math on average. (huffingtonpost.com)