School is never out. We homeschool. We're always learning. It's not classroom sit down book learning much of the time but real world things to a large degree. Projects are multi-discipline.
The latest project our family is almost finished with:
Building a USDA / State inspected modern meat processing facility (a.k.a. butcher shop)
History, government, regulations, economics, business, math, engineering, material sciences, architecture, construction, plumbing, electrical, water supply systems, heating, ventilation, refrigeration, meat cutting and so much more...