According to CollegeBoard.com, there are usually three types of College Essays.
The “you” question:
Colleges want to know who you are—values, priorities, etc.
Choose one or two things that reveal your best qualities.
The “why us” question:
Colleges want to know why you chose their school.
What are your goals and your commitment to their school?
The “creative” question:
Colleges want your reaction to a specific topic—national issue, book, famous person.
Colleges want to see how creative you can be and the extent of your knowledge.
Be creative but use common sense.
Looking for more helpful hints? Try "A Student's Guide to Writing a Scholarship Essay"