Jan Boxill says she did not teach 160 independent study courses at UNC Posted Apr 25, 2015 Jan Boxill is refuting records that indicate she taught 160 independent study courses during an eight-year period at UNC. Records obtained by The Daily Tar Heel in November showed that Boxill, a philosophy professor, offered 160 independent study courses between spring 2004 and spring 2012. (Daily Tar Heel)