PHTest....The TRC estimates 6000 children died.
"Sinclair has guessed up to 6,000 children may have died at the schools but it’s impossible to say with certainty."
There were approximately 150,000 that attended the schools. Even the TRC doesn't claim anywhere near 30% (more like 4%)

In no way am I defending what happened at the schools. I just think it's good to use the data reported by the TRC rather than wildly exaggerate what happened.