It is in the nature of middle school kids to run their mouths. Doubt that something like that would be kept a secret among adults, let alone thirteen and fourteen year old adolescents. Feel badly for the teacher/PW of course, but exposure was probably inevitable.
You can bet that the minute the first whiff of this got out in the school, the male teachers would be on their I-Phones looking her up for a quick fap, and the female teachers would have been doing the same thing to bitch and whine about her. In the end, the kids probably didn't bring he down, her co-workers did. But..where is her union on this? In most teacher's unions you can take a crap on the principal's desk and not get fired.