Frederick County Public Schools
Teacher Science General
Costello Mark D in 2019 was employed at Frederick County Public Schools and had a reported pay of $50,000, according to public records. This pay was 12 percent lower than the average and 6 percent lower than the median salary in Frederick County Public Schools.
| Year | 2019 |
| Full Name | Costello Mark D |
| Job Title | Teacher Science General |
| Get Teacher Science General Salary Statistics | |
| State | Maryland |
| Employer | Frederick County Public Schools |
| Annual Wage | $50,000 |
*Information may include where available: salary, bonuses, benefits, retirement contributions, pensions, and other financial data.
| Employer Name | Frederick County Public Schools |
| Year | 2019 |
| Number of Employees | 6,137 |
| Average Annual Wage | $56,502 |
| Median Annual Wage | $53,455 |
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