Blake Pursley has been missing 15 years, longer than he’d been alive before his disappearance. He is presumed dead — even if he didn’t meet with foul play, his medical conditions would have killed him without treatment. There’s an article about this in the San Bernardino Sun.
The article doesn’t directly cite the Charley Project, but I’m reasonably sure Charley was used as a source. I don’t know where else they would have gotten the info about the two other boys missing from the same school.
I’m not accusing anyone at the Cedu School of anything, of course, and one of the boys definitely did run away. But I think it’s very usual to have THREE long-term disappearances from one small school. Any school for troubled teens is going to have runaways, but two of these “runaways” have been missing more than 15 years, and even Daniel Yuen‘s been missing for five. I wonder if anyone has investigated this.