In time, some ideas from these experiments and paradigm challenges may be adopted as the norm in education, just as Friedrich Fröbel 's approach to early childhood education in 19th-century Germany has been incorporated into contemporary kindergarten classrooms. Other influential writers and thinkers have included the Swiss humanitarian Johann Heinrich Pestalozzi ; the American transcendentalists Amos Bronson Alcott , Ralph Waldo Emerson , and Henry David Thoreau ; the founders of progressive education , John Dewey and Francis Parker ; and educational pioneers such as Maria Montessori and Rudolf Steiner , and more recently John Caldwell Holt , Paul Goodman , Frederick Mayer , George Dennison , and Ivan Illich .
Preschool refers to non-compulsory classroom -based early-childhood education. Pre-kindergarten (also called Pre-K or PK ) is the preschool year immediately before Kindergarten. Preschool education may be delivered through a preschool or as a reception year in elementary school . Head Start program , the federally funded pre-kindergarten program founded in 1965 prepares children, especially those of a disadvantaged population, to better succeed in school. However, limited seats are available to students aspiring to take part in the Head Start program. Many community-based programs, commercial enterprises, non-profit organizations, faith communities, and independent childcare providers offer preschool education. Preschool may be general or may have a particular focus, such as arts education, religious education, sports training, or foreign language learning, along with providing general education. [ citation needed ]
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