In another post you said you are in 7th grade. If that is true I want you to know that it is good to take school seriously and know that college will be on your horizon, BUT it is way too early to start focusing in on what is needed for college.
For now you should:
–Work hard, learning, and doing as well as you can in the most challenging curriculum you can manage.
–Continue your involvement in activities such as art you care about and work towards improving your talents and making meaningful contributions to those activities. When you are in HS there should be teachers who can advise you about what should go in a portfolio.
–Enjoying spending time with your family and friends.
–When the time comes (years from now) study for standardized tests.