This is true. Too many parents, and by extension, their children, believe that high school students need to be "scheduled" in some sort of impressive activity during every waking hour. While it is not bad to be involved in multiple extracurriculars, it is bad if it's just for the sake of having more than the kid next to you. Colleges would rather students find one true passion and take it far instead of being a mediocre member of all 75 clubs offered at their high school.
Parents must remember to allow their teenagers to be teenagers. This means having a social life and not judging your child for taking some afternoons and evenings "off" to unwind or just relax.
More: Teen schedules should stress quality, not quantity; Classes, work, social life add to pressure, Press & Sun-Bulletin (Binghamton, New York)