Every college-bound teen knows that high school community service is a key component of any college application. Admissions officers look for well-rounded students who volunteer in high school.

But according to a study by DoSomething.org, a group that connects kids with volunteer projects, students should heed this word of warning:

DoSomething.org conducts annual surveys on community service and college admissions. They have found that most admissions officers prefer students to be consistently involved with one issue over a variety of causes. Moreover, social change isn’t something you should do just to put on your application — follow your passion. Seventy-five percent of admissions officers stated that a school requiring community service does not “taint” their perception of the applicant’s commitment. If your experience was required, make sure that your level of involvement was clear, focusing on what you were most passionate about.