Adolescent African American females face multiple obstacles that hinder their educational success. High school completion and college attendance rates remain lower for African American females than those for other racial and gender groups, while pregnancy rates for African American teens are higher. Group work holds promise for meeting the developmental needs of adolescent African American females, particularly group work focused on cultural and ethnic relevance. School counselors are called by their professional organizations to respond to the needs of disempowered students through social justice advocacy interventions (ASCA, 2005). The program of group work Sisters of Nia (Belgrave et al., 2004) uses cultural and ethnic values to empower adolescent African American female students. Sisters of Nia is introduced as an advocacy intervention at the student/client level of the ACA Advocacy Competencies. Implications for further school counseling advocacy efforts at the school/community/systems and public/social/political levels are included.