D. Students are required to turn off cell phones during school hours.
Explanation:
Freeport High School in Portland, Maine, strengthened its anti-cell phones policy in the 2011/2012 academic session. Formerly, the school allowed its students to use their cell phones only during lunch.
Now, the measures have been tightened and cell phones can be used only after school hours. The reason for this policy is that cellphones allow kids to cheat and also distract them while learning.
