Is or should nudity in documentaries, Educational and artist material of adolescences 14 to 17 legal?

Generally speaking, from a morals perspective, what is acceptable in terms of nudity has to do with sexuality. Nudity for the purpose of appealing to sexual tastes tends to be discouraged the most, while nudity in terms of documentaries, education and art tend to be tolerated. It's the intention of the nudity that has the potential to disqualify it.