There are currently over twenty-five different studies students can partake in, each approved by an Advisory Board of instructors from all levels. Most of the activities require a Macromedia Authorware plugin.
Teachers can sign up to have their student's data collected and analyzed at a future date. A Teacher Tour section provides assistance for teachers using OPL in their classrooms.
The OPL can be found at http://opl.apa.org/Main.aspx