July 1, 2012, issuelab.org: Summarizes key research in the mentoring field, to help funders invest their mentoring resources where they can have the most impact. The resulting brief, Making the Most of Youth Mentoring, outlines:
Tips for determining which organizations have the capacity to implement strong mentoring programs;
Tips for recognizing high-quality mentoring programs; and
Tips for making the most of six common mentoring approaches:
Community-based mentoring,
School-based mentoring,
Group or team mentoring,
Cross-age peer mentoring,
E-mentoring, and
Paid mentoring.

The guide includes basic information about each model’s cost and evidence base, as well as “best practices,” and red flags that should be avoided. Link to Guide