Critical thinking? Psychology and social skills? Ethics? Self-discipline?<p>These are skills necessary in the middle ages that are still necessary today.<p>Also, basic math, science, language, history, gym, etc. most likely aren’t going away. Everyone has a calculator and encyclopedia in their pocket, but mentally computing basic arithmetic and understanding basic facts are still important skills.<p>Those weren’t necessary in the middle ages if you were doing manual labor (except some could still be useful, such as STEM letting you develop more efficient techniques, and history teaching you what to expect from the outside world). But I believe most were taught to nobles, and most were definitely taught post 1918 when public school became mandatory in every state.