With the new year underway, school districts across West Marin are weighing policies aimed at cracking down on rampant cell phone use in classrooms. Last week, Governor Gavin Newsom sent a letter to all California schools, urging them to implement stricter policies on smartphone use during class. His plea comes on the heels of recent regulations implemented in states like Florida, Indiana and Michigan, and a Pew Research survey indicating that over 70 percent of…