Teachers in the test-oriented education environment often focus on the good students who have a promising future, but ignore the psychological guidance of the "bad students. " In 1968, American psychologist Rosenthal made an Experiment: He randomly selected 20% of the students from 18 classes, and then he told the teacher that these students on the list were the "most promising". After a period of testing, the results showed that the students on the list did well To other students, the conclusion of the analysis is that the randomly proposed list has affected the teacher to some extent, and the teacher unconsciously gave these students more encouragement and guidance in the daily teaching process. The main points supported by this passage are:. ['"Poor students" are not necessarily worse than ordinary students.', 'Through hard work, "poor students" can catch up with students who have studied well.', 'Teacher factors are an important reason for the decline in academic performance of "poor students".', 'Rosenthal test has some enlightenment on how to help "poor students".']