Mark Oestreicher (Marko) is a veteran youth worker and former president of Youth Specialties. The author of dozens of books, including Youth Ministry 3.0 and Middle School Ministry, Marko is a sought after speaker, writer and consultant. Marko leads The Youth Cartel, providing a variety of resources, coaching and consultation to youth workers, churches and ministries. Marko lives in San Diego with his wife Jeannie and two teenage children, Liesl and Max. www.whyismarko.com.
Scott Rubin has been on staff at Willow Creek Community Church for 18 years, and he's currently the director of Elevate, the junior high ministry at Willow Creek. Scott, along with an entirely-fantastic team of staff and volunteer leaders, has the privilege of helping young adolescents follow Jesus. He also co-authored two books in the Middle School Survival Series with Mark Oestreicher.