Opposition—usually but not always from conservative, religious sectors of society—in many countries has blocked or severely hampered the spread of sexuality education. As Senderowitz (2000) points out, of the range of YRH interventions, school-based programs typically are the most exposed to criticism and opposition. Sexuality education programs usually unfold in the public sector, are highly visible, and are often under the control of local authorities and thus more open to revision or elimination. Getting the necessary approval and buy-in from the government, community and religious leaders, parents, and teachers has been a struggle, both for pilot programs.