jonathan kara za and joshua paul meyers. he even received child pornography on a school computer. >> let's wake up and do something for our children. >> we also uncovered multiple cases in which teachers lost their licenses in another state and filed to disclose that when applying for a new license in virginia. >> that's crazy. i feel like there should be a way that we should know that. why is it that easy. >> one teacher had his license revoked in florida 1999 based on a sexual relationship with a 16-year-old student. he lied on his virginia application and got a license to teach in 2001. that was revoked 12 years later, in 2013 when the state discovered his personal history. >> then i think we need to be doing more adequate background checks that go from state to state nationwide. >> that's ridiculous. >> we found some teachers convicted of sex crimes involving children, yet they do not appear on sex offender registry. that's because some are still in jail. others have moved out of state. wusa9. >> we posted the database o