I had Mr. Allen in the late 80's as a Chemistry teacher. We didn't have the Internet to rate teachers at that time. He is a wonderful teacher! Much didn't sink in then, for me, but it has since!
A touch insane... Just like any good teacher should be.
The world's greatest teacher, he should get a Nobel Prize for his 30+ QUALITY years of teaching. The perfect chemistry teacher! Mr. Allen makes chemistry fun!