It's always so cool to see someone else getting interested in this field! Something that's interesting about sex ed as a profession is that people get into it in SO many different ways. I actually go through the path I followed, as well as offer some advice for other people who are thinking they want to enter this field, in this piece: https://www.scarleteen.com/article/advi ... _i_do_that
. One thing that I tell people who are interested in this work is to think about if there are particular elements of it that appeal to them. For instance, some people really like the idea of working on advocacy or policy, others like direct services, others want to do something directly linked to sexual healthcare, and so on.
The degree question is actually an interesting one, because I'm not sure I've met two people in this line of work who have the same academic background. I was a sociology undergrad, and was already working here when I got my masters in social work. Other people went through sexology programs or got masters of public health. And quite a few people came in without a specialized degree.