I doubt China's official figures include the so called "educational schools". If they did they'd easily top the chart. I mean, official USA figures probably don't include Guantanamo and black sites either but that's not the same magnitude.
Although anything is possible, this is no evidence, and I hardly believe it.
People lives are worthing much more than their organs when they are used for labor so I don't see any reasonable benefit from doing that. Plus, Falun Gong has a long history of fighting this, still without any evidences brought to the table, so I have some doubts about their assumptions.
The issue in Xinjiang is already serious enough, no need to add some unconfirmed facts which may just make us lose credibility if they're proved fake.
> People lives are worthing much more than their organs when they are used for labor
I absolutely disagree with this claim. Forced labor is inherently inefficient and barely cost-effective, especially in the modern age of mechanisation and the lessons of soviet GULAGs proved just as much. Especially so in China, which in no way suffers from a shortage of labor force.
It's true that China doesn't suffer from a shortage of labor force. However, wages raised a lot, and almost-free labor is more interesting financially.
After second thoughts, I think it may be possible that on a regional scale, local officials would find such practice highly profitable.
The party goal is not to be highly profitable (they are already), it's to stay in power as long as they can. Of course money can help in that goal, but such practices, if they leak and are confirmed, would just erode the stability of the state.
I feel the cons are too high and pros too low, politically, to do such atrocities on a country scale.