Baltimore County Public Schools
Mathematics High School
William Johnstone in 2025 was employed at Baltimore County Public Schools and had an annual salary of $115,696, according to public records. This salary was 82 percent higher than the average and 65 percent higher than the median salary in Baltimore County Public Schools.
Baltimore County Public Schools records show William Johnstone held job of Mathematics High School from 2018 to 2025.
In year 2025 William Johnstone's salary was 28 percent higher than average Mathematics - High School salary in the state of Maryland.
Since 2018, the salary has increased by $21,480, a total rise of 22.8 percent.
| Year | 2025 |
| Full Name | William Johnstone |
| Job Title | Mathematics High School |
| Get Mathematics - High School Salary Statistics | |
| State | Maryland |
| Employer | Baltimore County Public Schools |
| Annual Wage | $115,696 |
| Pay Plan |
*Information may include where available: salary, bonuses, benefits, retirement contributions, pensions, and other financial data.
| Employer Name | Baltimore County Public Schools |
| Year | 2025 |
| Number of Employees | 14,888 |
| Average Annual Wage | $63,399 |
| Median Annual Wage | $69,997 |
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