At Natrona County High School, Dan May started the semester slouched at his desk in the back of Mr. Krumm’s algebra class. May surprised Krumm by scoring a 95 percent on the first test. Krumm ...

This week, May is struggling to teach his own classes in Idaho while thinking about the teacher who meant so much to him. Krumm and his partner, Casper College math teacher Heidi Arnold, were killed ...