Entry-level professionals often have a hard time trying to determine which information to include on their resumes. While you obviously want to include any education or degrees, the other stuff from college gets a little trickier. Do employers want to know you were in the photography club? Would a hiring manager care you were membership chair for your fraternity?
As with many things in resume writing, the answer is: it depends. For most recent graduates who lack significant work experience, school activities can give some meat to your resume. For instance, if you're applying for a job with a nonprofit, mentioning you worked on your university's Relay for Life event, which raised $30,000, will definitely make you an attractive candidate. However, if you're applying for a position as an accountant, the hiring manager probably doesn't care you were inducted into the honor society for history at your school.
Any activity you participate in that involves leadership skills is worth discussing on your resume. If you were captain of a sports team or an officer in student government, your understanding of how to manage others will be helpful throughout your career. However, loading your resume up with activities in which you were only peripherally involved will just create noise on the page.
It is also helpful to include any information about activities that can be quantified; for instance, President of 50-member chapter of Operation Smile that raised $20,000 to support medical procedures for children in the third world. Well-recognized honors, such as being inducted into Phi Beta Kappa or giving the graduation address for your class, are also worth mentioning. However, it's just not necessary to mention every single club or honor society in which you were a member.
There's one more question entry-level professionals often ask: Should I include my college GPA on my resume? Generally, this information paints you as someone who still thinks in the collegiate realm rather than in the professional one. If your GPA was impressive enough for you to graduate cum laude, then that is worth mentioning without including the number. You would want to include the actual number if you're applying for programs-such as those in investment banking-that specifically seek out candidates with a specific GPA. Otherwise, the fact you earned your degree is often all the hiring manager needs to know.
As you put your resume together for an entry-level position, ask yourself if the information will still matter in 5 or 10 years. If the answer is no, then it may not be worth mentioning now.