Paulette Sinclair

 portrayed Alice Nelson, the jaded Vice Principal of South Lisbon High School.

Sinclair is a Canadian film editor, director and actress. She is known for her work on "Red Lights" (2012), "Spotlight" (2015) and "Mr. Viral" (2012).

Source
Paulette Sinclair on the Internet Movie Database. Retrieved on September 13, 2019.