I don't disagree in theory, but it hard to learn such things as a student when one is subjected to taunts on a daily basis.  Education becomes secondary.  Unfortunately, if a parent isn't going to teach wrong and right, the school has to.

Just in the past 2 semesters at my school, 1 student answered a test question on the Montgomery Bus Boycott by saying "it was so n______ could sit in front of a bus".  His parents didn't understand what the big deal was.  Same with the parents of the kids that felt the need to fly Confederate flags off their trucks at school the day of Homecoming because of a disagreement they had the day before with a biracial kid over current events (the biracial kid is probably going further in life than the flag-flyers, so I'm sure that's part of it).  This is just a couple of events in a small line involving minority and LGBT students at my school.