A curse word is basically a another word for a word. Like, example (a true example) The "B-word" Is basically another word for, "Female Dog" And the "F-word" Has two words of a meaning. Like: "F**k you" Means, "Curse You" And another one for the "F-word" Is, basically which I don't want to say.... But, so and so. And the "A-word" Just means butt. Little kids,such as: 5+ Say butt, So aren't they saying, a curse word, but in another way? I'm not saying you HAVE to let them curse. I'm saying maybe if you wanted too.
Curse words are often used by people who are less educated, and the school is not a place to learn science, math, language and etc. only, but it's a place where the student learn good behavior and morals. Curse words aren't only unaccepted by the majority of people but it's also many different religion show strict restirictions against these words. And since the school is a place where you can find variety of students who have certien believes, we should at least respect them and not curse in school. And also the school is a formal place so curse words should defiently be banned. And also it is often used when the person doesn't know how to act in a specific situation so he/she will use curse words because they have nothing else to say while being trapped in such situations and I believe that schools are one of the places to solve this issue and not to spread it.