STATEHOUSE ROUNDUP: Go to the head of the class By Matt Murphy Form a line, single file. No talking. And stay to the right. Teachers are used to enforcing these rules for their pupils, but when it came to their own COVID-19 vaccinations it was only by breaking them that this week they wound up getting exactly what they said was necessary to safely return all children to the classroom. The pressure campaign to vaccinate teachers has been building for weeks, but reached fever pitch after Gov. Charlie Baker announced that he would seek to return all students back to in-person learning this school year, beginning with elementary students by April.