High school is the time when we begin staring down the road at different directions. As teenagers, many of us aren't sure of who we are meant to be. We have more choices about relationships, careers, friendships, and etc., but we don't necessarily have the wisdom to make the best choices. Wisdom comes with experience, and yet lack of wisdom causes some of the drama.
In high school teenagers are becoming very independent. They are at that stage where they think they can conquer the world and everything is their business. Drama is very common in high school. There is a lot of gossip-he said, she said type of thing.
In my experience, most of the drama happens towards the beginning of high school and then by the end people have matured a bit and learned about what is important and what isn't.
Sometimes they seem dramatic and sometimes they actually are. It's an odd situation to live in as a high schooler - you have no control over where you live, and the rules of the house are also often beyond your control. In high school you take classes that are required even though you don't have much interest in them, follow silly bells that have no basis in the real world, get marked tardy and serve detention. Add all of these weird living factors together and some drama is probably warranted. Your body is also full of hormones at that age, which tends to make people more moody.
Teens have reached a stage in their development where they are nearly ready to launch into the world on their own - some of them think this can not arrive too soon and that they are indestructible and can cope in the outside world already without their parents. This is not so. Life may have become a little bit samey and dull because they have now gotten comfortable with sleepovers, separation anxiety, short holidays such as as summer camp away from home and handling pocket money. However, they still have a lot more to learn. Theyn need experience with handling relationships with peers, partners, employers and adults. Often they will invent or participate in situations where they can 'practice' social skills arising from breaking friends, splitting with partners or advising others who are going through these issues. Sometimes they are acting out solutions they have seen adults close to them using.
Things are dramatic in high school because all the students are teenagers who are not sure of themselves. Because of this, they are easily affected emotionally by things that would not seem like such a big thing if they were older and more secure.
The teen years are, in my opinion, the least secure time of life (that I've experienced so far, at least). You are not really secure in who you are and you are constantly being judged by peers, parents, and teachers. Because of that, teens would have a harder time just relaxing and being themselves and letting things go than adults do. That makes everything a drama, in my opinion.
In high school things have nothing to do with a dramatic aspect, because it is perhaps the most beautiful period of the teenager's life. If things tend to take a dramatic turn, is the role of teachers to calm and advise students.