US Teachers have harder jobs than counterparts in the industrialized world:

New results from an international survey shows that U.S. public school teachers work harder under more difficult conditions than teachers elsewhere in the industrialized world, and they don’t have the same kind of supports, such as enough useful feedback and professional development. 

It’s why we collected their stories into a book called My Hardest Year of Teaching: and Why I Didn’t Quit. Once you read their stories, you’ll realize this study is exactly right.