This was a Catholic high school and the talk was part of a series billed as talks on JPII’s Theology of the Body, about marriage and sexuality. Everybody knew perfectly well what it was about, and in fact, one of the sections is on social attitudes and Catholic teaching, which is exactly what she was discussing.
http://catholiceducation.org/articles/sexuality/se0027.html
This talk was very inappropriate. I would withdraw my kids from this school.
Please read the attached document so you can more fully discover what the church really teaches about sex education.