In just a few weeks, the crossing guards donning bright yellow vests and wielding handheld stop signs at West Marin School won’t be volunteers: The Transportation Authority of Marin voted last week to fund a guard program at the school for at least the next two years, a boon for caregivers and school staff who see the crossing as dangerous but have struggled with a volunteer program. 

“I’m so grateful,” said Peggy Day, who organized…