A group of first-graders in San Francisco have been drawn into the battle over same-sex marriage after taking a field trip to see their teacher's wedding. 18 students from the Creative Arts Charter School went to City Hall to toss rose petals and blow bubbles on their teacher, Erin Carder, and her wife Kerri McCoy, and now the trip is being used by the Yes on 8 campaign to support its claim that unless unless Prop. 8 passes, children will be forced to learn about same-sex marriage. "This is overt indoctrination of children who are too young to have an understanding of its purpose," says Chip White of the Yes on 8 effort. The school's interim director Liz Jaroflow says the trip was "a teachable moment" and points out that same-sex marriage is currently legal: "As far as I'm concerned, it's not controversial for me. It's certainly an issue I would be willing to put my job on the line for." [SF Chronicle]