Though Subscene is now largely defunct for new uploads, its archive is excellent for older films. Search for The Chorus 2004 . You will find separate sections for "English" and "English (SDH)."
If you’d like, I can:
If you're interested in watching Les Choristes with English subtitles, you can find the movie on various streaming platforms or purchase a DVD/Blu-ray copy with subtitles. i--- Les Choristes Subtitles
When a child whispers: Subtitle (smaller or italic): (whisper) “Il est si triste…” Though Subscene is now largely defunct for new