We don't need no thought control. The song states that education will steal our individual characteristics, grinding our idiosyncrasies into one conformed personality. I don't agree that education itself is melting our individuality away, but the social aspects of school definitely are. This pressure causes many of us to hide our actual selves and pose as that shining example of the clique with which we want to belong, and we often get disparaged when we can't keep up the act. It didn't end well.
Conformity never can be good.
Fear of loneliness is the most logical explanation. Maybe it's time we tried our genuine selves. It can't hurt to try. You may be disappointed, but at least you'll know. You're an independent thought away from being an individual.