The school opened in 1878 as a free kindergarten, founded by Felix Adler at the age of 24. In 1880, elementary grades were added, and the school was then called the Workingman's School. At that time, the idea that the children of the poor should be educated was innovative. By 1890 the school's academic reputation encouraged many more wealthy parents to seek it out, and the school was expanded to accommodate the upper-class as well, and began charging tuition; in 1895 the name changed to "The Ethical Culture School", and in 1903 the New York Society for Ethical Culture became its sponsor. Fieldston awards over $15 million in tuition-based financial aid to 22% of the student body.