In some states, kindergarten entry ages have been raised, so children are older when they enter school. And teachers know that developmentally appropriate education for young children requires time and space for children to explore, create, and construct their own knowledge. Increased staffing is often necessary. Space and materials are needed. And transportation costs could change.
Kindergartens exist today in many variations.
Children attend kindergarten all day, five days a week. Kindergarten children attend school all day every other day and on alternate Fridays. Kindergartners begin their year with a half-day session and move to a full day in steps over the school year. Some kindergartens operate a staggered-day program. Children attend school every but have different teachers in the morning and afternoon.