Here's a little reading on it. Everyone calling the writer full of shit. There is a Westies mention part way down but even the mention seems like conjecture. I've read TJs book several times and I don't see it.
Still a great movie and nobody is going to convince me there wasn't extreme brutality in NY boys homes back then. Maybe not exactly as depicted, but let's be realistic.
https://skeptics.stackexchange.com/questions/20420/is-the-novel-sleepers-a-true-accountThere are tons of articles on this.