Ms. Beck is Greg Heffley and Rowley Jefferson's math teacher at Larry Mack Junior Middle School. She appears in Diary of an Awesome Friendly Kid.
Greg thinks Rowley has a crush on her, but Rowley says he just likes her personality and the way she smells. Greg got detention from her for copying everything of Rowley's test, even his name which is likely why he got caught. She said she was disappointed in Rowley, which made him sad.