Outline

I. There's quite a lot of reasons for which people attend college or university. But I think for most people, student's career is an investment, it's just for a better living condition in the future. But sometimes people are even totally ignorant of this fact. For them, attending college or university is as natural as attending high school or elementary school.
II.Student's career is an investment - Knowledge is power.
a. Knowledge is a superior symbol.
b. Knowledge expand our field of view.
III.Student's career is an investment - Diploma is guarantee
a. A good diploma means high salary.
b. A good diploma avoids bothering or physical laboring jobs.
IV. Sometimes they are even totally ignorant of this fact.
a. Nowadays it's common to attend college or university.
b. We take that life's propose is to make money for granted.
c. But we do not present our desire for money obviously, we want to cover it.
V. Conclusion
Although sometimes people do not want to admit that they enter college or university for making more money after graduate from school ,or even never think seriously about why they stand in the campus and hold books in arms. Objectively saying, they just follow the currents of the money and society, and do what they believe correct.