Teachers can have 30+ kids to cater for with many other responsibilities and red tape that are part of their job but not actually related to teaching. It's a major complaint from teachers in many different countries right now. The testing and marking alone takes up so much of their time. Of those 30+ kids, all have different abilities, strengths, learning styles, personalities, academic levels, special education needs. That's before you even get into lesson plans, preparation, parent teacher evenings, social issues, socio-ecomonic issues, bullying and much much more that teachers have to deal with. The huge rise in autism spectrum disorder is a major challenge for many teachers right now. It's a hard job! I'm not saying home educating your kids isn't hard but it's a whole different beast. I have been told by 2 different fellow home ed parents, who are both ex-teachers, that the best home educating parents are not ex-teachers, as they are not basing the facilitation of their children's education on the bias of their training. They are coming at it from a completely different angle. Plus they have a vested interest in their own kids. A lot of public schooling is testing and crowd control.