Sexual Education

It seems like lately sexual education has become a big deal in schools.  But are they really becoming better for our children?  In class we discussed how the sex education is going about it's ways of teaching.  I am scared out of my mind to have children and to have them deal with these things.  What is going to happen to our kids if they way they are taught is in a horrible (pornographic) way? What can we do as parents to prevent this from happening?  I sure I hope I knew this answer, but I plan to be as ready as I can when that times comes around.  I hope there are ways and I hope as parents we want to protect our kids from these horrible ways that sex is being taught to our children.