After entering middle school, the content of learning has changed obviously. The types of courses studied are gradually increasing and the content is gradually deepening. Chinese, mathematics and English learned in primary schools have changed from intuitive, perceptual and fragmentary knowledge points to a more complete and systematic knowledge system, with more emphasis on ability requirements; At the same time, knowledge of humanities and social sciences such as history, geography and biology has also become an important learning content. These subjects are necessary for junior high school students to accumulate cultural quality, which objectively greatly increases the academic burden of junior high school students. Teachers pay more and more attention to the rigor of imparting knowledge and the cultivation of students' thinking methods and abilities. In addition to requiring students to memorize a large number of knowledge points such as definitions and principles, it is more important to cultivate students' ability to master and use knowledge.

The differentiation of academic performance is becoming more and more fierce:

With the increase of learning volume and the deepening of content, coupled with the psychological fluctuation and physiological changes of junior high school students, the academic performance of junior high school students fluctuates greatly, and there is a fierce differentiation at the same time. Mainly manifested in the following aspects: First, there is little correlation between the academic performance of primary schools and that of junior high schools. According to relevant experts' research, the situation that students who are top students in primary schools continue to stay ahead after entering junior high school is greatly reduced; On the contrary, some students who are considered to have poor grades in primary school often come from behind and become top students. But the academic performance in junior high school is obviously related to the study in senior high school. Second, the second grade often has obvious learning "differentiation points". Generally speaking, after learning adaptation and adjustment, learning habits and methods have basically formed a fixed model, and grade differences have gradually become obvious. Especially in the second grade, with the deepening of learning content, natural science courses such as physics are offered one after another, which requires students' logical thinking ability to be higher and higher, and intelligence plays an increasingly prominent role in learning. At this time, learning began to appear good, poor, poor, and the gap between good and poor is getting bigger and bigger. The third is the difference between academic performance and hard work. Excellent students can arrange their time reasonably, use proper methods and get twice the result with half the effort, so they often seem relaxed and still have spare capacity to study; Students with poor learning are tired of coping with it, getting twice the result with half the effort, and learning is getting harder and harder, and learning has become a heavy burden. This relaxed learning attitude is an important basis for judging students' learning potential.

Students' autonomous learning ability is becoming more and more important;

After entering junior high school, students' learning independence is gradually enhanced. In classroom teaching, teachers pay more attention to inspiring students to think independently; In addition to classroom teaching, students also need to consciously arrange their own learning. In family education, parents' direct help to children's learning is gradually decreasing, and many parents are unable to do so because of the increase in children's learning difficulty. Therefore, the influence of autonomous learning ability on academic performance is obviously enhanced, and students with strong learning dependence tend to get worse and worse.