Is the Beatles song "Lucy in the Sky with Diamonds" a rebellious anthem to wild drug-taking or a touching tribute to a child's imagination? Discuss.

The question, which has exercised Beatles fans since the song appeared on the seminal 1967 album "Sgt. Pepper's Lonely Hearts Club Band," could soon form part of an exam curriculum for British teenagers.

Exam board AQA, which sets and marks papers for about half of all GCSE exams taken by British 16-year-old high-school pupils, plans to introduce three songs from "Sgt. Pepper" into the music curriculum from September 2016.