OK, not exactly simply. This lesson plan featured a one-two combo of radiant heat and displacement ventilation, along with smart use of sensors in its ventilation strategy. Multiple lighting/daylighting tactics drive costs down further while protecting comfort, and in every aspect, the team kept their eyes on cost vs. grants and equipment payback to keep the budget in check.
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.