This can be a broad subject, which you'll consume many directions. So, you have to be selective. Quite simply, you'll need a good thesis statement which will drive your essay.
Here are a few good examples:
"Despite the fact that private school offer excellent education, they don't provide a realistic...
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"Despite the fact that private school offer excellent education, they don't provide a realistic view around the globe.Inch This is often a good and cogent thesis. You can mention the expense connected with private education, which always limits people. Furthermore, society, unlike a personal school, is doesn't only communicate with a particular group. Therefore, understanding how to communicate with a variety of people is really a valuable lesson whatsoever age range.
"All education ought to be public, because we ought to produce a society where people have equal use of education." This can be a harder thesis to protect, however, you might mention such things as social inequality, the benefits of social capital, and other things that provides the rich an advantage.