At Hallway, a start-up for high school students by high school students

Hallway offers an online portal where students can submit questions on various school subjects, such as calculus or algebra, that their peers then answer. Students can rate which questions and answers are most helpful so that useful information rises to the top.

By Steven Overly

Full Story: http://www.washingtonpost.com/business/capitalbusiness/at-hallway-a-start-up-for-high-school-students-by-high-school-students/2012/08/31/093a471c-f1e8-11e1-a612-3cfc842a6d89_story.html