The message is possibly controversial, yet quite simple: Selection is all about fan total pressure. The article is a bit more complex, with discussion of what the author sees as confused logic, accompanied by multiple illustrations to back up his premise. Take a look for yourself - when it comes to proper selection methodology, the pressure is on.
Leaning on experience and data from various K-12 cities and projects, the author pursues some less conventional design approaches. They may revolve around radiant heating and/or cooling, but depending on school size and other factors, the smart use of heat recovery, DOAS, and improved central plants could also put a project on the HVAC honor roll.