Too many student council positions, school newspaper positions, and yearbook committee positions, etc, may represent "leadership within tight parameters" or more simply "puppet leadership".
True leadership may be thinking outside the box and breaking the mold, replacing the old model with something new. Leaders acknowledge and prioritize problems, bring an issue to light and attempt to resolve it.
One student created their own extracurricular soccer team, recruiting a coach, assistant, and players. It was a consistently successful team.
Another example is a student drafting and promoting a new district policy.
Each of these examples illustrate being a person of influence within one's community.
Regardless of whether one is showcasing leadership or another talent, it may be wise to be authentic in representing one's self, to help ensure the best possible fit with a college or university.
