Should all the teenagers be taught in the same content of curriculum? There is a debate on this educational problem has lasted for years. I conceive that, national curriculum, although essential, should not be unified to the same one even these curriculums will be taught before students enter their college.   The aim of educational institutes which suitable to teenagers such as primary schools and high schools is to encourage them to find their own favor, and teach them the methodology of study, and try to thinking in different way. However ,unified national curriculum does not meet any one of these aim.   First, thinking differently is essential to everyone, it is the sourse of creativity. If the entire students are having the same class, this will give a negative effect on their personality. Let us imagine that if there are kinds of idea held by the students, one of them is supported by the majority, and the other one held by the minority. Discrimination will exist, and the majority will begin attack those who hold the different ideas. Some minority, in order to protect him, will give up his opinion and reluctantly support the one they object. This is not kidding; it used to happen in the Nazi Germany and Soviet Union. Those dissidents were cruelly treated if they hold the different idea with their chairman. When there are no people think in the same way, all people will be fanatic.   Second, if all students are taught in the same national curriculum, they will be some terrible disaster once the curriculum mistakes something. The cost to let the curriculum keep on the reality is large. Nowadays, people are easily taught by internet; however, the unified curriculum is telling people knowledge that outdated. So the implement of these kind of curriculum will be a failure.       I concede that there are some advantages of the unified curriculum. On the laws and citizen rights, all people should be taught how to protect themselves and some basic historical fact should be told to our teenagers. Once the unified curriculum implement, it will improve the quality of people in this aspect with efficacy. However, the committees of curriculum are not consist of professional expertise and, the nation try to use the curriculum to fool the people and distorted the fact, these curriculum will never be a textbook of commonsense but a tool for the government to control people’s mind.   In the contrary, different curriculum by different region can let their students new more about their surroundings. As a multicultural society, teenagers should be told to respect the difference between people. They should be tolerating to religion, dissident. In addition, as the tradition and language used by different people, there should be different versions of these curriculum. And only the school committee and parents make agreement on the curriculum those teenagers should be taught can keep the liberty and personality of teenagers.   In conclusion, I considered that a nation should not require all the students to learn the same curriculum, because this policy will validate the right of liberty and lead to the potential brain wash.