Portland High School is a public high school established in 1821 in Portland, Maine, United States, which educates grades 9–12. The school is part of the Portland Public Schools district, and is one of three high schools in that district, along with Deering High School and Casco Bay High School. It is located at 284 Cumberland Avenue in downtown Portland. Along with its sister school, Deering High School, a family can choose which of the two to send their students to.

Deering High School (DHS) is a public high school located on Stevens Avenue in Portland, Maine, United States. The school is part of the Portland Public Schools district.