First, we can learn more knowledge and cultivate more abilities. The knowledge I learned in college is deeper than that in high school, and I have my own major, so I can learn my favorite professional knowledge when I go to college. In college, I can take part in more activities and provide basic viability for my future work.
Second, we can build a bigger and broader platform for ourselves. When you go to college, you can make more outstanding talents, including teachers. The bigger the circle, the better. How far a person can go sometimes depends on your circle. University is a platform on which you can learn many advantages of others.