Here are some educational writing samples. In Europe I taught Presidents, CEOs, founders, VPs, and Directors of national and multinational companies. That meant writing and preparing lessons based on various business areas: managing, HR, finance, marketing, sales, administration, etc.
Here in the US, most of my work has been at the college level. Both kinds of teacing require clear, explanatory prose that informs and guides. I have included a lesson and a couple of syllabi.