Your college resume will include a relatively wide variety of information. While your academic transcript will help colleges to understand your academic abilities, your resume enables the people in admissions to understand more about you, as an individual. Include information about any extracurricular activities in which you participated throughout high school--sports, artistic programs, clubs, etc. Point out if you held a particular office in a club, state which sports team you played on (varsity, junior varsity, club, etc.) and any other similar information which might be of interest to a college admissions officer.
College officials love to know that you spend time volunteering--it shows them you likely possess a strong character and you enjoy giving back to your local community. Include any volunteer work you have done throughout high school, particularly those volunteer activities in which you participated for an extended period of time. If you haven't ever volunteered before, but would like to, ask someone at your local Chamber of Commerce for some suggestions on organizations that would welcome a young volunteer.
List and, where necessary, describe any academic honors you have accumulated throughout high school. Honor roll, awards, academic (or artistic, athletic, etc.) competitions and the like would all be included in this section of your college resume. Many honors/awards are self-explanatory (e.g., colleges will understand what "honor roll" means), but some (e.g., "XYZ Academy President's Achievement Award") might need a few words of explanation so the college admissions officers will better understand what you achieved in order to be acknowledged or honored in such a way. Try to keep descriptions in this section relatively brief, though, if possible.
If you have any special skills or training in a particular area, subject, language, etc., include a section for them on your resume. Remember that your resume is a tool by which college admissions officers can learn more about you, your interests and your accomplishments. Providing colleges with a better understanding of what sets you apart from other high school students is a great way to improve your chances of admittance. If you are a straight-A student who plays sports after school and volunteers on the weekends, the fact that you are also fluent in French, Spanish and Italian might set you apart from other smart, athletic and kind-hearted applicants. Including your special skills on your resumes will help you to stand out from other applicants, and will thereby improve your chances of getting into the school of your dreams.
To recap, remember your college resume is a tool that, if done correctly, will work to your advantage. Of course, your resume is not the only thing college admissions officers will take into consideration when deciding whether or not to admit you to their school, but it will help them make their decision. With that in mind, make sure your resume contains no spelling or grammatical errors, and that it presents you in a positive light.