Head Masters, first year $3636, annual increase $144, maximum $4,500 Masters, Heads of Departments, first year $2484, annual increase $144, maximum 3,492 Junior Masters, appointed before June 1, 1906, who have attained the rank of Master 3,204 Junior Masters, appointed after June 1, 1906, first year $1764, annual increase $144, maximum 3,060 Assistant Principals, first year $2004, annual increase $96, maximum 2,484 The rank of assistant principal shall be abolished as the position becomes vacant by the retirement of the present incumbents. First Assistants, first year $1,812, annual increase $96, maximum 2,484 Industrial Instructors, Heads of Departments (High School of Practical Arts), first year $1,812, annual increase $96, maximum 2,484 Assistants, first year $1,452, annual increase $96, maximum 2,316 Junior Assistants, first year $1,008, annual increase $96, maximum 1,200 Instructors in Mechanical Department (Mechanic Arts High School), first year $1,764, annual increase $144, maximum 2,772 Co-ordinator, first year $2,412, annual increase $96, maximum 3,180 Co-operative Instructors (Brighton, Charlestown, Dorchester, East Boston and Hyde Park High Schools), first year $1,884, annual increase $144, maximum 3,036 Industrial Instructors (Dorchester, East Boston, and Hyde Park High Schools and High School of Practical Arts), first year $1,500, annual increase $96, maximum 1,932 (For teachers employed on a per diem basis see Order No. 2.) Clerical Assistants, first year $984, annual increase $96, maximum 1,272 INSTRUCTORS--LATIN AND DAY HIGH SCHOOLS. Commercial Branches Instructors, first year $1764, annual increase $144, maximum 2,772 Assistant Instructors, first year $1452, annual increase $96, maximum 1,932 Manual Arts Instructors, first year $1764, annual increase $144, maximum 2,772 Assistant Instructors, first year $1452, annual increase $96, maximum 1,932 Salesmanship Assistant Instructors, first year $1452, annual increase $96, maximum 1,932 BOSTON CLERICAL SCHOOL