The associate head of school at John Bapst Memorial High School in Bangor, David Armistead, will take over leadership of the school next July, after the current head of school retires. Mel McKay, who has led the 540-student independent high school since 2007, announced his retirement in July. Armistead will take over the school, which serves students from a number of Bangor-area communities as well as a sizable population of foreign students, following a school year that has been altered due to the COVID-19 pandemic.