Highest salary at Msad #31 Howland in year 2022 was $65,155. Number of employees at Msad #31 Howland in year 2022 was 18. Average annual salary was $23,132 and median salary was $18,421. Msad #31 Howland average salary is 51 percent lower than USA average and median salary is 58 percent lower than USA median salary.