One of the most important factors evaluated by college admission officers is the difficulty of student curriculum. 

Students who challenge themselves by taking advanced courses are viewed very favorably and are considered stronger college applicants.  It is important to know that it is better to earn a “B” in an Advanced Placement (AP) course than an “A” in a standard course.

For that reason, you should sign up for the most challenging curriculum you can handle (Honors, Advanced Placement (AP), International Baccalaureate (IB) and college-prep classes) and work hard to earn A’s.  Be sure to take the classes needed to be eligible for admission to top colleges and universities.

Typically, top schools require a minimum of:

4 years of English.
3 years of Math (Algebra 1 and 2, Geometry).
2 years of Lab Science (Biology, Chemistry or Physics).
2 years of Social Science/History (World History, Cultures and Geography; U.S. History/American Government/Civics).
2 years of the same Foreign Language.
1 year of Visual or Performing Arts.
1 year of College Preparatory Electives.
           
Top colleges and universities recommend a rigorous academic curriculum which includes all of the following:

4 years of English.
4 years of Math (Algebra 1 and 2, Geometry, Pre-calculus or Calculus).
3 years of Lab Science (Biology, Chemistry, Physics or Advanced
Biology).
3 years of Social Science/History (World History, Cultures and Geography; U.S. History/American Government/Civics and Economics).
3 to 4 years of the same Foreign Language.
1 year of Visual or Performing Arts.

As many College Prep Electives as your class schedule will allow, such as advanced courses in English, Math, Science, Social Science, and a Foreign Language.

However, be careful not to overburden yourself.  If you register for a ridiculously difficult schedule of classes, you could burn out and end up earning mediocre grades.  Plan accordingly and sign up for the most challenging curriculum YOU can handle.