liz mclaughlin, nbc news. >>> from coach to gun control advocate, steve kerr will join a town hall meeting on gun violence. town hall will be with students next monday afternoon. koch kerr will join congressman rocan j. kerr is an outspoken advocate for gun control. his father was killed by gun men in lebanon in 1984. >> debate for sex education in the east bay. students are expected to be taught lessons in health, puberty and sexuality. but there's a petition to delay those lessons. those again it say the district approach will focus on sexuality and could lead to sexualizing of children. other parents say education is the best tool. >> whether we're teaching it at home or at school at some point these kids do need to learn these concepts and terms. >> district officials say the curriculum follows state law and standards. they also point out that those signatures on the petition are from around the country and not necessarily the community. >>> happening today all six democratic candidates vying to be the next mayor of san francisco will attend a forum. it's held by the san francisco demo