There's no hope for this. Random checking shows that the vast majority of middle school articles are essentially catalog entries. When the private schools are excluded, there isn't a one I've found that shows the slightest hint of notability.
But we'll never be able to get rid of them. If we try, there will be a tremendous outcry, and the indiscriminate inclusionists will appear to support those whose editing ox is offered up for sacrifice. Perhaps there is some hope for a blanket statement that schools under the high school level are not intrinsically notable. Heck, I'd like to do that for high schools too, but it won't happen. But as it stands, the disambig page for all the "Martin Luther King, Jr." schools is going to be huge, because the direction is at the moment that all of them will eventually get articles.