The types of preschool education institutions in the United States mainly include public kindergartens, private kindergartens, family nurseries, preschool education centers, family nurseries and hair nurseries.

1. public kindergarten: educational services provided by public schools for students of a certain age (usually 3-5 years old), usually free or at a low price.

2. Private kindergartens: Educational services provided by private institutions usually require extra fees, and are also aimed at students aged 3-5.

3. Family-style nurseries: usually run by individuals or small teams, they usually provide services at their residences and provide care similar to nanny services.

4. Preschool Education Center: Usually run by educational institutions or non-profit organizations, it usually provides full-day or half-day services, which can accommodate more students and provide them with various activities and projects.

5. Family Day Care Center: It is operated by a family day care service provider and is a more formal service than a family day care center, usually with license and training.

6. Entrustment: Individuals or organizations prescribed by law provide services in their own homes, which are limited to a few children.