When we last heard from William Abreu, the vice principal of Progress High School for Professional Careers, in Brooklyn, he was advising female students that they ought to suck his balls if they want to get ahead in this world. The latest accusation is even more disturbing. According to an Education Department investigation, Abreu sexually assaulted two students separately in his office — investigators say he raped one of them, gaining her silence by threatening to have her deported — and then turned the two victims over to Juan Martinez, the president of Progress, Inc., which founded the school. Martinez allegedly sexually abused the girls again, forcing one to perform oral sex. "It's even more horrifying because they were sharing these girls," Special Schools Investigator Richard J. Condon told NY1's Lindsey Christ.