Rude drivers in the school drop off

I was taking my kids to school today and as of late I've been noticing how rude the people are. In elementary a lot of parents park in the school drop off and walk their kids to class. Which there is nothing wrong with that because I also do it. There's plenty of room in the drive thru drop off. However, my problem is: When you try to pull out and leave, the parents who just drive thru and drop off have no decent courtesy as to let you in. I know this this happens in many other places besides the school drop off. It just happens that I have to go there every day. What happended to courtesy. What is so wrong with letting one person in front of you? When did everyone become so rude?Also, another problem I have with the school drop off: Teachers have specific places to park. However, many of them want to park in the school drop off. Which makes it even harder to get in and find a spot and get out.Our school is located in an area which is already very congested. We live in a very small town and the school is located on the main road thru town. Between the hours of 8 and 4 this road has an overload of traffic (including 18 wheelers). It's already hard enough, then you add the school traffic, which just makes it worse.I guess that's it. There will probably be more this afternoon when I go pick up my kids from school.