. >> reporter: this is matt weissman's first year teaching. he has a degree in biology but is one of the few if not the only man in his college chemistry class interested in teaching. >> raise your hand if you want to be a a dentist, 40. a teacher. me and three other kids. >> reporter: his principal says he gets plenty of applicants, but -- >> the vast majority of applicants are female. 7 of 8 applicants we receive are female. >> reporter: a review of public schools conducted four and submitted to maryland officials find four of every five teachers hired statewide last year were women. shortage of men in public school classrooms, a growing problem recruiters noticed they have been trying to fix. >> undergrad programs aren't producing as many people who are interested in education. it is our job as a school system to say we need you. >> reporter: maryland officials changed some of the rules in public schools. in some districts retired teachers can be rehired and some college students who choose teaching will qualify for extra financial incentiv