Phone: (406) 728-2400 ext. 7635


Degrees and Certifications:

Margie Dennison

Greetings mathematicians!  My name is Margie Dennison and I am so happy to be a mathematics teacher at Sentinel High School.  

This year, I am teaching Algebra 1 and Algebra 2.  I will post announcements and assignments to our Google classrooms.

Please feel free to reach out to me by email at  Here's to the new school year!