Penn High School is a public high school located just outside Mishawaka, Indiana, United States, near South Bend. It is the only high school in the Penn-Harris-Madison (PHM) School Corporation. The school takes in pupils graduating from the PHM's three middle schools, Schmucker Middle School, Discovery Middle School, and Grissom Middle School, as well as some graduates from local private and religious grade schools and occasionally transfers from neighboring public school districts (primarily South Bend and Mishawaka and other schools). It is the largest high school in the South Bend metropolitan area.