The large majority of the students do not make it to the top-tier senior high schools. Students with poor academic performance go to other schools where they meet students like themselves. This is the stage at which you are clearly ranked according to your performance in the competitive entrance examination. Each school tries its best to establish its identity, uniqueness and educational philosophy. And yet, many fail to attract the best students they want.
Most schools accept students purely on the bases of academic competition.
And many students are already exhausted when arriving at senior high school. Some are lucky enough to be able to get into the school of their first choice. Many others having failed in the examination or having given up the hope of and therefore the opportunity to take the examination to the schools of their choice, ended up at the current school. From the start they feel they are at the wrong place. They feel disillusioned if the class is not interesting and if they do not find their teachers stimulating and exciting to listen to.