Check out this stunning Montessori kindergarten. Obviously the aesthetic is so pleasing, but I think a lot of kids would thrive in a tidy environment, free of too much clutter and stimuli. With the way most classrooms are designed in the U.S., one might assume there's solid evidence that all children would excel in an environment with bold, primary colored banners, posters, vibrant educational rugs, etc.
The Montessori page Wikipedia states that "Montessori education involves free activity within a "prepared environment", meaning an educational environment tailored to basic human characteristics, to the specific characteristics of children at different ages, and to the individual personalities of each child. The function of the environment is to help and allow the child to develop independence in all areas according to his or her inner psychological directives." "The environment should exhibit the following characteristics:
Sources: design-milk.com and Wikipedia.com