Petersburg has one of the best school systems in Alaska.
In 2007, the Rae C. Stedman Elementary School was recognized as a “Blue-Ribbon School”. Stedman Elementary is one of two schools in Alaska, and one of 200 public schools nationwide to receive this honor.
Petersburg High School has a graduation rate in excess of 90%, and a dropout rate of 1.5%. Students can take a variety of advance placement classes, and there is a well-developed career and technical education program where students can qualify for college credit. Student life is active with a variety of sport, recreation, and extracurricular clubs. Each student is required to complete a community service project before graduation. In 2011 and 2012, Petersburg High School was recognized in US News & World Report as one of the top school in the country.
Higher education opportunities are available through distance learning and the public library's learning connections program. The University of Alaska Southeast offers many distance education learning certificates and degrees (Associates, Bachelor’s and Master’s). Most public library classes are taught by local residents and often include computer, woodworking, and painting/drawing classes.