Yes. Respecting the Circle of Life is one of the first sexual and reproductive health programs to be developed and rigorously evaluated with American Indian adolescents.
Results indicate that RCL has strong evidence of effectiveness for the prevention of teen pregnancy in Native American communities. Research findings also suggest that implementing RCL with Native youth and families can promote healthy conversations around sex during a critical period of development when youth may begin initiation of sexual activity.
You can read more about the research findings here.