"Teacher" is a song by the British rock band Jethro Tull, first released as the B-side to the January 1970 single "The Witch's Promise",[2] on the Chrysalis label.

[6] Written by the band's frontman Ian Anderson, the song is a comment on the corruption of self-styled gurus who used their followers for their own gain.

And a lot of the time, of course, it was just about getting your money and driving around in a big, white Rolls-Royce, which struck me as worthy of writing a song about.

I wasn't singing necessarily about spiritual leaders of a particular ethnic persuasion or a particular religious view, but just the idea of the teacher, the guru.

[9]Unlike its more folk-inflected A-side, "The Witch's Promise", "Teacher" features a standard, rock-oriented arrangement and structure.

"[10] The two songs on the "Witch's Promise" single were the first recording to feature keyboardist John Evan, who would join Jethro Tull as a permanent member shortly after and would remain with the band throughout the 1970s.