She is being observant and monitoring results based on variation of grades
Answer:
Pygmalion effect
Explanation:
Pygmalion effect is the psychological process in which the expectation related to work improves the performance of a person. George Bernard Shaw was a social psychologist who proposed the Pygmalion effect.
Many psychologists conducted much research on the Pygmalion effect. Rosenthal was a psychologist who has been used this affect students' classroom where it has been called a classroom Pygmalion effect.
Thus here Sarah a middle-class school teacher who has been used Pygmalion effect in her classroom to improve the performance of the students.
After the March on Washington, in 1964, the Civil Rights Act became law. However, this did not make it easier for African Americans to vote in the South. To bring attention to this struggle, Lewis and Hosea Williams led a march from Selma to Montgomery, Alabama, on March 7, 1965. (Based off of Gooogle)