Highest salary at Msad #31 Howland in year 2021 was $56,109. Number of employees at Msad #31 Howland in year 2021 was 14. Average annual salary was $22,535 and median salary was $17,781. Msad #31 Howland average salary is 52 percent lower than USA average and median salary is 59 percent lower than USA median salary.