How a District Decides What to Teach The number of different-but-really-the-same curricula available is overwhelming. Many districts decide to reuse a previously adopted health textbook (which may be from 2002 or may be from 1993, depending on appropriation of funds). There are also supplemental materials available from acne and feminine product companies; they provide fun, puberty-related materials with their corporate name plastered on them (a form of free advertisement). Someparents are uncomfortable having their children learn about sex in school, so most districts offer parents a way to "opt out" on behalf of their child. One district I worked in allowed a parent group to choose abstinence-only curricula and find community members to deliver it to students during the school day. Other districts leave it up to the individual schools to decide what to teach.