Teachers do not receive pay based on the quality of student work. A number of factors, such as years of experience, amount of education, and school district funds, are better determinants of teacher salaries.
Most school districts use steps to indicate teacher salary schedules. An entry-level teacher usually starts on step one, which indicates that he is in his first year of teaching. He then progresses to a higher step and salary as he progresses in his tenure. Teachers with master's degrees and other advanced degrees also follow the step schedule, but they usually receive higher salaries within each step.
Sometimes districts do not award step increases with each year of experience. Lack of funding and financial strains attribute to the step freezes that teachers can experience.