Each year on April 21, National Kindergarten Day honors Friedrich Frobel, the man who started the very first Kindergarten in Germany. The kindergarten was founded by Frobel in 1837, and it laid the foundation for modern education. The first kindergarten was developed in Blankenburg, Germany, in 1837. It was called a “garden for the children.” This kindergarten fostered social experiences for children and helped them transition from home to school. In 1856, Watertown, Wisconsin, opened the first kindergarten in the United States. Founded by Margarethe Schurz, this kindergarten was a German-language class. Kindergarten spread across the country and was adopted by private institutions. In 1873, it was finally added to public school systems.

National Kindergarten Day is celebrated on April 21 of every year.

Friedrich Wilhelm August Frobel was born on April 21, 1782. National Kindergarten Day is celebrated annually in his honor. However, it is unknown who founded National Kindergarten Day.