That's quite a story, and the same could work for many schools, but God help us, school administrations today are mostly led by union goons of the left that do not want what is best for the students at the schools... they just want money, lots of it, with little to nothing required of them.
Things haven’t changed much over many years. Even when administrators weren’t unionized, circumstances conspired to often make them grasping.
In some states, school administrators are still seen as patronage jobs. In others, radicals populate local school boards and seen them as their puppets. States give money to schools based on how many students attend, so principals are discouraged from suspending or expelling students.
If a teacher or a student really fouls up, the principal gets in trouble. Holding back students with bad grades can result in adults in high school with kids, and a 17 year old high school freshman is a disaster in the making. So it is to their benefit to promote them even if illiterate.
Nationwide, there is a perpetual shortage of principals, because it is such an onerous and unrewarding job.