WELCOME to Mr. Petronek's Museum
John Petronek
I started teaching in Mahtomedi in 1966. During that time, I have taught grades 3, 4, 5, and 6 and coached at the middle school and high school. I also served three years in the Marine Corps and taught in the Peace Corps in Liberia, West Africa before coming to Mahtomedi.  My classroom is known as a museum.
 I teach four sections of Science and Social Studies.