In what ways is Dead Poets Society about the conflict between realism and idealism?

Society as we know, has been shaped by numerous conflicts in the past, some between nations, some between races, and some between the interests and issues of certain people. Dead Poets Society in particular, is about the conflict between realism and idealism. For example Welton Academy is a school that is deep-rooted in realism, the teachers are all realists and in turn did not allow the students to think for themselves, but taught them what they thought was necessary. The students, being young, have ideals but were never able to realise them. All it took was Keating with his idealism to s…