This document reviews the sixth issue of the 'Research in Action' series, focusing on school-based mentoring (SBM) as a prevalent form of mentoring in the U.S., with nearly 870,000 adults participating. Key findings suggest that while SBM has similar costs to community-based mentoring, its outcomes show comparable benefits, particularly in academic performance. The document outlines characteristics of effective SBM programs and emphasizes the need for adapting practices to better serve specific youth demographics.