One - Room School Houses Still Exist?

I found a blog talking about one-room school houses and found it to be quite entertaining. I remember hearing about back in the days having those one-room school houses where it would be jammed with students and just one teacher. Likewise in the blog I read, Today's One-Room School House - Good For Kids?, it mentions how even till today they have these one-room school houses.I agree with this blogger about the inconvienence of one-room school houses. There may be some advantages yes, for example a real slash in the cost of schools. Also, the cost of having just one teacher for several grade levels put together. On the other hand, there are also quite a few disadvantages. One, putting several grades together only slows down the education for those who are in a higher level. For example the math skills for younger ones would be much simpler than what older children are capable of doing. Second, each grade needs to have their own teacher so as to have thier full undivided attention and that can't happen in a one-room school house.It makes sense if people were saving money back then to have these one room places, but nowadays things have changed. In order for children to obtain the best education they can get they need to have exclusive settings and environments in order for them to flourish. So, they need a teacher for those of similar age, a classroom for themselves so that they can go at their own pace. If they're kept with lower grade levels then they're not progressing in their education, so then what's the point of having them go to school only to delay them by a long period of time.In my opinion, yes, there are some rural areas that one-room school houses are ideal for them. This blogger includes Angle Inlet, Minnesota as being good for that type of schools, and when I think about that type of schools worldwide, Africa, India, Indonesia, etc come into mind.This is not an unusual setting, but if monetary funds are available to aid schools, then it should be put forth in order for students to get the best education as a result flourish in the future careers.