Depends on which schools! Some business schools have caught on and started offering execution-oriented product management courses in the MBA programs. Of course, there’s also General Assembly and the likes that offer execution-focused curriculum as well. My read on why traditional university haven’t taught PM execution skills are a) the field is relatively new, b) most business programs are suppose to be well-rounded general management programs without role-specific specializations excepts in electives, and c) the execution varies greatly from company to company!
That said, teaching/coaching/advising is what I do so feel free to shoot me any questions!