what is meaning of 'lower fifth' in the context?
Please follow the link given below:
https://www.meritnation.com/ask-answer/question/as-the-hitler-of-the-lower-fifth-in-the-school-also/the-browning-version/1832836
https://www.meritnation.com/ask-answer/question/as-the-hitler-of-the-lower-fifth-in-the-school-also/the-browning-version/1832836