Good class online is a course for students from grade one to grade three in senior high school. Its teaching assistant team consists of elite teachers in high school who help with homework. Physics in senior one is also explained by professional teachers. The teacher's lectures are comprehensive, of high quality and rich in content. The curriculum is reasonable, covering important knowledge points and examination points of various subjects in high school. Teachers have rich teaching experience and flexible teaching methods, which can guide students to learn well and improve learning efficiency.