Rate my EC's

Varsity baseball, 4 yrs (Captain, MVP)
Varsity XC, 4 years
4 yrs -Robotics Team, 4 yrs (Captain)
Finance Club, 4 yrs Titan Challenge 2yrs (Regional runner-up, 3rd in state)
Science Bowl 2 yrs (Captain)
Science Olympiad 3yrs (Captain) + lots of medals and National qualifier (state champ)
Jazz Band 4 yrs (First Drummer)
Whitewater kayaking and telemark skiing at Bowdoin Outing Club (Attended Northeast Rivers advanced whitewater trip freshman year).
Summer internship at Research Institute. Studied cell notching in cardiovascular diseases. Publication pending
Volunteer -Peru Shoulder to Shoulder Trip. Worked at an orphanage in Peru for three weeks. -Other random stuff

I would say 9.5/10. They are really good and should be able to get you into elite colleges if you have the right grades and test scores. The only way that you could receive a 10/10 in ECs would be if you were awarded national awards because colleges love to see those.