Petersburg High School (PHS) is the public high school for the Southeast Alaskan community of Petersburg and the Petersburg City School District.

It offers: School classes were first held for Petersburg children in the mess hall of Icicle Seafoods from 1904-'05.

1927 was the year that held the first graduating class of Petersburg.

The class consisted of Ruby Rayner, Alma Cornstad (valedictorian), Julia Wasvick, and Fred Nelson.

The first known superintendent was C. H. Bowman, who held the position from 1927 to at least 1936.