Predating "TOM BROWN'S SCHOOL DAYS" ( which I still adore and have a first edition of, as well as the disc of the movie ), is Dickens' descriptions of a truly wretched public school, in "DAVID COPPERFIELD".
And then, moving a bit forward, are Churchill's writings about his schools days; though NONE of these books are about a Cathedral Choir School.
Yes, this all girl cast remake ( if it EVER does get made ), will not only be absolutely terrible, beyond measure, it WILL be a FLOP!
Yep, David Copperfield. I was surprised to see Tom Brown was written in 1857 - that early.