Front of the Class
Boondock saints
DANNY
In the 1998 movie starring Sam Neill, Merlin's teacher is Frik, a gnome in service to Mab.
Stand and Deliver (1988)
the crush
Charly's teacher is Alice Kinnian (played in the 1968 movie Charly by Claire Bloom).
The turrets in the tower were very high up.
Stand and Deliver? But the teacher in that was not "white", he was latino. Also possibly Freedom Writers, with Hilary Swank as the teacher.
Bella's biology teacher in Twilight is Mr. Banner.
Castellanus Clouds
Yes that is when gun turrets were invented.
Yes, turrets are machine guns and they are fast and powerful too.