These students will read works by authors ranging from Plato and Herbert Marcuse to Tlingit writers. The point is to “develop and flex a more rigorous political imagination,” according to one course syllabus. They will take on 15 to 20 hours a week of manual labor in Sitka, and set their group’s rules on everything from curfews to cellphones. Last summer’s cohort discouraged the use of phones during class and service hours and ordered everyone to turn off the internet at 10 p.m.