The ATWA LSE program will be implemented following a joint curricula development process with approval from the government in each of the three countries. The 'dose' of the intervention are once-weekly hour-long sessions for both in-school adolescents (session facilitated by teachers) and out-of-school adolescents (sessions facilitated by community leaders) over the course of the academic year (roughly 9 months), or roughly 30 sessions of exposure to the in-depth LSE curriculum.

Control groups are comprised of adolescents (10-19) attending schools where the ATWA Life Skills Education (LSE) program has not been implemented, as well as out-of-school adolescents (10-19) who have not received the ATWA LSE program in their communities. Control groups receive "standard of care" educational opportunities. "Standard of care" in the case of this trial translate to the provision of standard Ministry of Education-sanctioned sexuality education, as already available in the adolescents' schools and communities.

The Adolescent Transition in West Africa (ATWA) program is an in-school (Niger, Mali, Burkina Faso) and out-of-school (Niger and Mali) educational intervention implemented by local staff members at Save the Children, local community members, and teachers. ATWA provides internationally-recognized life skills education (LSE) to adolescents ages 10-19 years, and seeks to improve adolescents' knowledge and behaviors regarding sexual and reproductive health and rights. Outcome indicators to assess knowledge, behavior and attitudes of adolescents will vary by adolescent demographics as well as by country context, as based on the final set of curriculum deemed appropriate by the respective Ministries of Education (MOE).

The average number of births to female respondents ages 15-19

The percent of adolescent females who have ever been pregnant + the percent of adolescent males who have ever caused a pregnancy

Indicator definition 3A: Percentage of [sexually active] adolescents age 15-19 years currently married or in union who have their need for family planning satisfied with modern contraceptive methods Indicator definition 3B: Percentage of female adolescents (15-19) who are sexually active and who have their need for contraception satisfied with modern methods

The percent of sexually active adolescents (15-19) who are currently using (or whose partner is using) a modern contraceptive method. "Currently" is defined as 'at last sex'

Indicator definition 5A: Percentage of women 10-19 years old living with spouse before age 18.

Indicator definition 5B: Percentage of women 10-19 years old living with spouse before age 15.