Hallway, a new start up created by high school students for high school students has just launched.

Hallway is a website where students submit questions about subjects, such as algebra or political science, that their peers can answer. The site uses a Reddit-style system to rate the most useful questions and answers, which then rise to the top.

The idea for the website originated when 17-year-old cofounder Sean McElrath created Facebook groups so students could chat about specific assignments. In just one of these groups, membership soared to more than 300 students and a single question garnered hundreds of responses.

McElrath said teenage founders have a competitive edge. “Every day we get to talk to students and get their feedback on how they’re using and what they like and don’t like about Hallway,” he told me. “That kind of perspective is rare in business and we don’t take it for granted.”