Highest salary at Midlothian Sd 143 in year 2017 was $254,429. Number of employees at Midlothian Sd 143 in year 2017 was 264. Average annual salary was $41,957 and median salary was $49,035. Midlothian Sd 143 average salary is 10 percent lower than USA average and median salary is 13 percent higher than USA median salary. From 2016 to 2017, the average salary of employees at this employer increased 2.5 percent, the median salary increased 13.0 percent.