I organized mine the following way and will be starting at CCOM this fall ( 😉 ):
-Objective
-Education (GPA, Year of Graduation, Major, Relevant courses)
-Research Projects (Advisor, Project, short explanation)
-General Work History
-Medical Work/Volunteer
-General Volunteering
-Academic Awards
-Extracurriculars
-Hobbies -> I think this one is good because every medical school interview I had they asked me what I do to relieve stress, etc.
Mine ended up being four pages, but I figured for this secondary it was the only other thing that they could use to get to know you. Don't sell yourself short, include everything!