 The Stuttgart school grew quickly, adding a grade each year of secondary education, which thus by the 1923/4 school year included grades 9-12, and adding parallel classes in all grades.By 1926 there were more than 1,000 pupils in 28 classes.Already, in 1922, Steiner had brought his educational ideas to an English-speaking audience when he delivered twelve lectures at Manchester College at the Oxford Conference on the philosophy and practice of education and the imperative for a moral component.