That's kind of what I'm thinking. I don't know how big that school system was and what percentage of the kids died. It's a little over 20 kids a year and a great deal of that time was pre-antibiotics and before a lot of the vaccines that killed a lot of kids. If there were a thousand kids in these schools 20 kids a year is enormous. If there are 100,000 kids in these schools, 20 kids a year sounds pretty low.
And of course that's not to take away from what a terrible legacy all this stuff was. Taking kids from families? The physical and sexual abuse. It looks like at least one of these kids was murdered and I suspect the number is greater. The last of these schools didn't close until 1970. That blows my mind.