Note that this is an Op-Ed, not a news article. The claim that the problem with that effort was bureaucratic waste that was no fault of Zuckerberg is some heavy editorializing. Such a claim would indeed support Zuck starting his own school where he has even more control.
Other reporting tells a different story: while rising-star politicians loved seeing their names in headlines next to big numbers, the effort was catastrophically disconnected from the local community. Unlike public money, private money needed no public review, so the effort was launched like a surprise attack on the local teacher's union; the million-dollar community-engagement campaign's centerpiece public forums drew hundreds of residents who volunteered to help their local schools, who never heard back; the superintendent appointed to carry out the effort was an outsider from California who at one point got a unanimous vote of no confidence by the school advisory board (with no effect because "advisory"); that superintendent spent $3 million on an international consulting firm to develop a plan to redistribute students in the school system so that the neediest students don't end up in the worst schools like they usually do, but then couldn't answer basic questions from parents when the plan was finally revealed. https://www.newyorker.com/magazine/2014/05/19/schooled
Such a narrative would instead suggest that Zuckerberg should focus on more community engagement, rather than on consolidating more control over schools he wants to be better.
Other reporting tells a different story: while rising-star politicians loved seeing their names in headlines next to big numbers, the effort was catastrophically disconnected from the local community. Unlike public money, private money needed no public review, so the effort was launched like a surprise attack on the local teacher's union; the million-dollar community-engagement campaign's centerpiece public forums drew hundreds of residents who volunteered to help their local schools, who never heard back; the superintendent appointed to carry out the effort was an outsider from California who at one point got a unanimous vote of no confidence by the school advisory board (with no effect because "advisory"); that superintendent spent $3 million on an international consulting firm to develop a plan to redistribute students in the school system so that the neediest students don't end up in the worst schools like they usually do, but then couldn't answer basic questions from parents when the plan was finally revealed. https://www.newyorker.com/magazine/2014/05/19/schooled
Such a narrative would instead suggest that Zuckerberg should focus on more community engagement, rather than on consolidating more control over schools he wants to be better.