Dragging First Graders to Their Teacher's Lesbian Wedding Is Deemed A Teachable Moment???

A San Fransisco first grade class was taken on a field trip to their teacher's lesbian wedding and the charter school's directer deems it a 'teachable moment'. Huh? Did the parents give the school permission to let their 6 year olds attend a same-sex wedding? Wow, these must be very open minded and progressive parents. What's next on their agenda for field trips and teachable moments? A trip to the morgue to watch an autopsy?