Mt. Diablo Peace and Justice Center will host an innovative and inspiring all-day conference for anyone who works with young people in middle and high school from 8:30 a.m.-3:30 p.m., Saturday, Feb. 4, at Acalanes High School (1200 Pleasant Hill Road, Lafayette). Participants will learn to create peace in their world, in the lives of your students, in the classroom, the school and the community. Cost is $25 if you register by Jan. 15, $35 thereafter, including lunch. Five instructional hours of Continuing Education Credit (.5 CEU) are available through St. Mary's College for $25. To register, visit http://www.mtdpc.org.