I have noticed many differences. Based on my experience, I can tell that at private school you have more attention and, it seems that everything is easier compared to real life.
However, in my opinion, the hich school´s teaching way is more objective, makes you more independent, and teachers just worry about those students who are interested on stuying.
This is one of the most important differences from my point of view, because in the private schools, they supported you and chear you to continue studying.
This independence can be seen at the drop off and pick up times.
In private schools most students arrive to school by car, or the shool´s bus, while
public high school students go walking, or use public transport, even in these last years they have offered buses for people who live far away.
In mi opinion, picking up the children, is a way to demonstrate that parents are more available, which can mean they do not have full-time jobs as may be the case of others.
This is a way of being independent.
In addition to the transport, we can talk aobut clothing that is a way that students can express themselves.
In the private school I attended, we had a strict uniform that try to make as all the same, but you could always tell which people had more money....
