1. Training scheme: The excellent course focuses on cultivating innovative and practical talents, and students need to complete more experiments and projects; Ordinary classes pay more attention to the teaching of theoretical knowledge, and students have less opportunities to practice.

2. Teachers: Youke has a strong team of teachers and more scientific research projects and laboratory resources, which can provide students with a better learning environment; Teachers in ordinary classes are relatively weak, and they don't have much experience in scientific research projects, so they can't provide students with a better learning environment.

3. Enrollment criteria: The enrollment criteria for excellent classes are relatively high, and students need to get good grades in the college entrance examination before they can be admitted; The enrollment standard of ordinary classes is relatively low, and students can only be admitted if they reach the admission score of the school. Cost: The tuition fee of the top-quality class is higher than that of the ordinary class, because the teaching resources of the top-quality class are better and the teaching quality is higher.