Big Brothers Big Sisters is the oldest, largest and most effective youth mentoring organization in the United States. We have been the leader in one-to-one youth service for more than a century, developing positive relationships that have a direct and lasting impact on the lives of young people. Big Brothers Big Sisters mentors children, ages 6 through 18, in communities across the country - including yours.The Big Brothers Big Sisters Mission is to help children reach their potential through professionally supported, one-to-one relationships with mentors that have a measurable impact on youth.The Big Brothers Big Sisters Vision is successful mentoring relationships for all children who need and want them, contributing to brighter futures, better schools, and stronger communities for all.