More than 900 Big Brothers Big Sisters leaders, volunteers and donors are mobilizing this week at their National Conference in St. Louis with a focus on "Changing How Children Grow Up in America."

"Increasingly, more citizens recognize the serious problems too many of our youth face," said Judy Vredenburgh, President and Chief Executive Officer of Big Brothers Big Sisters. "Youth violence, drop out rates, poverty, drug and alcohol abuse -- Big Brothers Big Sisters is a solution that works to solve these societal problems. We are relevant and the demand is urgent. We see the children and families. We feel the hardship. We know the impact we make."

The conference takes place June 24-26 at the Renaissance Grand and Suites Hotel and America's Center Convention Complex. Presenters and independent data highlighted will support Big Brothers Big Sisters' mission to improve vulnerable children's odds for success.

Big Brothers Big Sisters has been positively impacting American children's lives for more than 100 years, making a measurable difference through positive relationships that have a direct and lasting impact on communities.

"Volunteers, alumni, leaders, staff, donors, and corporate and foundation partners are creating a nationwide network committed to our unique results-based approach to making a difference," Vredenburgh said. "All those who care about America's children are invited to be part of the Big Brothers Big Sisters movement."

At the conference, Carlos Arce, PhD will present recently-gathered qualitative research that will offer insights to help Big Brothers Big Sisters assess and adjust programs aimed at recruiting Hispanic mentors. In addition, Mark Scott, Director of Community Partnerships, will outline preliminary success with partnering with African American men's groups, such as the Alpha Phi Alpha fraternity. John Fleming, PhD, author of Human Sigma and Principal and Chief Scientist for in the Gallup organization, will share research on how children served benefit from strong, engaging staff relationships.

CSI: NY Actor, author and Big Brothers Big Sisters spokesperson Hill Harper, a Big Brother, and Zoro, renowned drummer, a former Little Brother, will share their personal stories and commit to helping to recruit volunteers and increase donations.

Americans committed to changing how our children grow up in America may contact .