Chenery Upper Elementary School, Belmont Public Schools (BPS), and town officials recently presented a plan to replace the school’s roof — the final of three major renovations to the building. According to initial estimates, the roof work is expected to cost $4.2 million. The town is eligible for a partial reimbursement through the Massachusetts School Building Authority (MSBA), said Town Administrator Patrice Garvin. The reimbursement would come out to about $1.1 million. The remainder of the project is proposed to…