What age is proper for children to attend school? Sending children to school at the appropriate age is essential for their future growth. But different children have different situation including git, family context and experience. So, we should consider those factors comprehensively before we send them to school. Some people believe that school provide better education to children, so they send their children to school as soon as possible. Certainly, the teachers of school have been trained and qualified by specific institutions, so they possess professional knowledge and skill about guiding children to study in a correct way. Hence, compared with ordinary parents, children are able to learn more effectively and quickly under the guidance of teachers. Besides, children have the opportunities to get along with peers and acquire some social skills which is impossible to learn at home. This initial interaction among children can establish some foundation for their future interpersonal network which is more complex and thornier. Therefore, the advantages of early school are obvious. However, some opponents think seven years old is an optimal age for children to attend school. It is adverse for them to be sent to school before that age. Some children have not possessed the ability of living in an environment without the accompany of parents before 7 years old. Like the kangaroo babies, they have not prepared fully to jump out the pockets of mothers. If we drag them out violently, they may not develop well in after time. For unprepared children, they will feel panic and dread in an entirely strange context, which may leave some metal shadow to them. Considering this point, choosing a proper time to send children to school is significant for their mental health. From my perspective, the time when children attend school should fit into their individual situation of growth. Some children have relatively mature mind, so they can adapt to school environment easily. While some children have not grown to the stage when they can jump out the protection of parents, it is better for them to delay the time to school. In a word, wo should assess the ability and conditions of children carefully rather than set a specific age easily or send them to school as early as possible