Yeah, right. The social worker wouldn't see the predator, would she, because he or she isn't going to be there in the middle school holding hands with the 12-year-old. All available information shows that the younger a sexually-active girl is, the older her male partner is.
"How old is your boyfriend, Shameika? We hand out these condoms only if he's no more than three years older than you. He's 14? Great! Have fun, dear, and come see me when you need an abortion.
Not to mention that predators would gravitate to victim-rich environments like ... social work.