1. Preschool education and compulsory education in the United States are closely linked. Whether public or private, primary schools in the United States have kindergarten classes, and more than 90% of 5-year-old children enter kindergarten classes in primary schools, which is very beneficial to the connection between the young and the old; 2, the United States is a multi-channel park, government, schools, scientific research institutions, charities, private enterprises, etc. , to better facilitate parents' choice; 3. Each park has different purposes, objectives, contents, educational forms and methods, and can make full use of the effective resources around it, such as the communities in universities and scientific research institutions. The reasons for this feature are:

First, there is no unified syllabus, teaching materials and evaluation criteria; B, the fierce competition in the United States makes gardeners strive to innovate and not imitate; C, preschool teachers have high professional level and strong teaching and research ability, which can enrich the characteristics of the park; D, scientific research institutions take the park as the practice base, and constantly innovate and develop; E, parents participate in the discussion and decision-making of major issues in the park, and the service purpose of the park is also the wish of parents; F, have their own characteristics to be in an invincible position. 4. There is no clear plan for kindergarten education in America. It focuses on personal education and game activities. Relatively flexible, it reflects teaching students in accordance with their aptitude, paying attention to children's interests, and making children the masters of educational plans and courses, rather than passive recipients.