<p>Colleges do check extracurriculars, although I do not know to what extent or what causes them to.<br>
My Student Council advisor and Guidance Counselor have both mentioned calls from admissions officers confirming a student’s participation in an activity. Both said that it was to check if the student was active in the club, and not just name only.<br>
While it is highly unlikely that your ECs would be checked (if colleges just randomly check) I would not take the chance of adding another year of involvement.</p>