A recent study found that fundie kids get pregnant just as much or more as secular kids. Dr. Joseph Strayhorn points out that fundies are successful in discouraging contraception, but the hormones win:
PZ Myers quips:
“We conjecture that religious communities in the U.S. are more successful in discouraging the use of contraception among their teenagers than they are in discouraging sexual intercourse itself.”
Fancy that. The adolescent sex drive is a power greater than Jesus.