What You Make is Second Only to What You Take
Your grade point average (GPA) is generally the second most important factor that colleges use to make admissions decisions. (
Curriculum is #1.) Check the college admission websites or ask an admissions officer at the colleges you are interested in what GPA and curricula are required or recommended.
Calculating Your GPA
Some colleges use your cumulative academic GPA, which is your GPA in your core academic subjects (not counting your grades in elective courses). Others use a cumulative GPA, including your grades in both core academic subjects and electives. Again, check with colleges that interest you to find out which GPA calculation they use. Use this GPA Calculation Worksheet.
Grade Trends
In addition to your overall GPA, most college admission officers are also attentive to your grade trends. While lower grades in your freshman and sophomore years weaken your overall GPA, an upward trend in your junior and senior years is a positive sign.
Colleges do look at your senior course load and grades.
Many, if not all, colleges request senior grades before making a decision on your application, so don't slack off during your senior year!
See How Admissions Decisions are Made for more information.