Now that'd be a mistake...unless you want your kid learning about condoms and homosexuality.
Our older (teenage) son is in an all boys Catholic high school (with an enormously good reputation). We insisted that we be briefed about all aspects of his 'family life' course. To our pleasant surprise, the course is taught by an extremely devout guy (married, family of five children) who is strongly and vigorously orthodox (including in areas of sexual morality). We consider ourselves lucky, and do continue to monitor ALL aspects of his education. What we have seems to be quite rare. Would that such be commonplace. It's obviously not.