The academic study of government is extremely important. Back when I was in high school, I really disliked the government courses we were forced to take, however they are an important beginning to what can actually be a very interesting education.
As an economics major, I have really been able to see the importance of the government, the decisions they make, what they represent, how they operate, and how they are viewed. Whether it be criticizing a government for not taking enough action, or intervening too much when they should stay out of the issue, people always have and will continue to debate the purpose of each government.
However, what can be noticed around the world, is that successful and largely developed countries, always have an established government institution. On the other side, poor and developing countries that are unable to escape poverty, or see constant corruption, may not have the proper institutions set up. Yes the government is far from perfect, but understanding their importance in the world can not be understated.
In high school, much of the academic subject that is government, focuses a great deal on the judiciary/legislative/executive side of things. It looks at more domestic issues and how it affects the people of that country. However, where high school education fails to elaborate with the academic subject of government, is the importance it has to the world, justice, business, economies, education, science, and almost everything else. The government plays a role in almost everything in life. Who do you think funds that high school education you're getting at a public school? The government. Who has helped fund for scientific research in the cure for various diseases? The government. Who do you think pays the firefighters who just rescued people from a burning building? The government.
I know a high school course in government may not be the most engaging class you take. However, the importance of understanding the government and its processes at a young age has its benefits. It's not until you either take more advanced classes, or read the news to really understand the importance behind it all. That's not your fault though. It's just a problem with the class being offered.