We Are Unique

We are one of 340 affiliated Big Brothers Big Sisters of America organizations across the country; yet, the only one focused exclusively on girls mentoring. With our 60 plus years of experience in serving the girls of Greater Boston coupled with our innovative and dynamic programming, our outcomes for Boston's girls are exceptional. Learn more about our impact.


  sisters hula hooping  

       staff of big sister       



We ignite girls' passion and power to succeed through positive mentoring relationships with women and enrichment programs that support girls' healthy development. 



Global, national, and local news directly impacts Boston's girls lives every day. We call your attention to these issues, ask you to consider how that connects back to girls in Boston, and decide how you can make an impact today.



Whether this is your first job out of college or you are a seasoned professional, you will have the opportunity to grow personally and professionally in our collaborative, driven, highly energetic environment. Big Sister is especially interested in hiring women who have been personally impacted by our organization. If you were a Big Sister or Little Sister in our mentoring program, we encourage you to apply. Your experience will bring a unique and valued perspective to a career with Big Sister Boston. If you are open to feedback, are proactive, have a positive attitude and the desire to work in partnership with the community we serve, then join us!

Big Sister Association was founded in 1951 by the Reverend Harold Taylor, Assistant Rector at Christ Church in Cambridge; Edith Taylor, a Cambridge police officer; and Frances Marley, an administrative assistant and legal consultant for the Society for Prevention of Cruelty to Children. Believing that girls in the community could benefit from the guidance and support of an older female friend, they created a one-to-one mentoring program where girls (Little Sisters) were individually matched with caring and committed volunteers (Big Sisters). In our first year, we matched six girls – now, Big Sister serves more than 2,700 girls annually.


Our vision is to create a mentor-rich community in which every girl has access to the individual nurturing, guidance and support she needs to become a confident, competent and caring adult. We are a national model for gender-specific mentoring for girls which can be replicated in other mentoring programs.

Big Sister's volunteer mentors serve 2,700 girls throughout Greater Boston (with a concentration in Dorchester and Roxbury), 500 girls in nearby urban towns like Malden, Somerville and Cambridge, 350 girls on the North Shore (concentrated in Everett, Revere and Lynn), and 200 girls on the South Shore, with a concentration in Quincy.


Below is a map of the 69 cities and towns Big Sister serves throughout Greater Boston.

big sister boston service area map



2014 Annual Report | 2014 Financial StatementsIRS 990
2013 Annual Report  | 2013 Financial Statements  | IRS 990
2012 Financial Statements  | IRS 990

2011 Financial Statements | IRS 990

2010 Annual Report  | IRS 990

2009 Annual Report | IRS 990

2008 Annual Report

2007 Annual Report


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