“All education is a struggle," said Marchbanks. "I had to struggle against schools and universities, of course, in order to get time to educate myself, which I did magnificently.”

1920s, The Aims of Education (1929)
Context: The universities are schools of education, and schools of research. But the primary reason for their existence is not to be found either in the mere knowledge conveyed to the students or in the mere opportunities for research afforded to the members of the faculty. Both these functions could be performed at a cheaper rate, apart from these very expensive institutions. Books are cheap, and the system of apprenticeship is well understood. So far as the mere imparting of information is concerned, no university has had any justification for existence since the popularization of printing in the fifteenth century. Yet the chief impetus to the foundation of universities came after that date, and in more recent times has even increased. The justification for a university is that it preserves the connection between knowledge and the zest of life, by uniting the young and the old in the imaginative consideration of learning.

A Voice from the Attic (1960)

George Orwell "The Art of Donald McGill"

Widely attributed to Shaw from the 1970s onward, but not known to exist in his published works. It is in keeping with some of his sardonic statements about the purposes and effectiveness of schools. First known attribution in print is in Neil Postman and Charles Weingartner's Teaching as a Subversive Activity (1971), "G. B. Shaw's line that the only time his education was interrupted was when he was in school captures the sense of this alienation."
Attributed

Source: The Number of the Beast (1980), Chapter IX : Most males have an unhealthy tendency to obey laws., p. 82

Source: On BBC Question Time's election special programme, 28 April, 2005.

Variant: My education was dismal. I went to a series of schools for mentally disturbed teachers.

Shakespeare over the Port (1960)

Source: The Beatles Anthology