What constitutes sex education and the grade in which it's taught varies

greatly in America and this year is shaping up to set a record for legislative

proposals that are mostly aimed at restricting the teaching of the subject in schools.

Ali Rogin has more on the increasingly complicated nature of sex education.

The Centers for Disease Control defines quality sexual education as medically accurate,

developmentally appropriate, and culturally relevant content that promotes healthy sexual development.

But only three states require comprehensive sex education to be taught in all schools.

Seventeen states provide abstinence only sex education.

And so far this year, at least 135 bills pertaining to sexual education have been

introduced or are in place nationally a majority of which would place

restrictions on sexual education in public schools. That's according to an analysis by the nonprofit organization, sexuality information,

and education council of the United States.

Sarah Flowers is Vice President of Education at Planned Parenthood Federation of America, a nonprofit

organization that provides reproductive and sexual health care and sexual

education in the United States and globally.

Dr. Flowers, thank you so much for being here.

First of all, when we think about comprehensive sex education,

what does that look like?

Comprehensive sex education means teaching a wide variety of topics in grades K through 12, including topics like consent,

understanding what boundaries are and how to decide what your personal boundaries are,

self-esteem, anti-bullying. and how to decide what your personal boundaries are.

Self-esteem, anti-bullying, healthy relationships,

...