<p>1) How do colleges know how many CS hrs you have served?"</p>
<p>In general, they trust you. However, colleges don't get impressed because of the amount of CS hours students have done. Colleges know that many students HAVE to do CS hours to graduate from h.s. or to fulfill club or IB requirements. </p>
<p>Colleges also don't require CS hours as part of admission. Indeed, only the most competitive colleges care that much about ECs in general. Instead of caring that much about the amount of time that you put in, those colleges -- places like HPYS -- are far more interested in the impact that your ECs (job, club activities, CS, community activities) had on you or others.</p>
<p>They are able to identify that impact through recommendations, interview and/or essay. It's very hard to bs an essay in order document an impact that didn't happen. In fact, if a student had never done ECs that had an impact, more than likely, the student wouldn't even be knowledgeable enough to know how to lie to demonstrate an impact.</p>
<p>Colleges don't care whether you've done 10 or 40 hours of hospital volunteer work. What they care about is what you learned from the experience and what you contributed (preferably documented through a recommendation or award).</p>
<p>"2) How do they know you've been this and that (President, Member) of a club during HS?</p>
<p>They in general rely on your word. They also see if the recommendations support what you're' saying. Remember, in general, you don't get to see your recommendations. If, for instance, your GC says that you haven't been active in clubs, but spend much of your free time studying, you'll obviously be a liar if you claim to be head of several clubs.</p>
<p>The very top colleges also are not going to be impressed by things like being president of school clubs or even student government. Such things don't stand out in their pool. Having leadership of statewide or country-wide organizations is what's needed to stand out, and such claims are very easily verified.</p>
<p>In addition, lying about presidencies, etc. will hurt you in the interview because when asked to describe things like meetings, you'd be obviously lying. If you have an alum interview, the alum also may have inside info on the organization that you claim to head. This happened once when a student falsely claimed to be an active member of an organization that I volunteered with and my son was a top officer of. </p>
<p>"3) If you say, they get the info from the school, well what if I BS-ed that info to the school too?"</p>
<p>Your GC may catch you in the lie (see #2), and then may give you low marks on the part of the GC recommendation that asks about your character. You'll never know this happened as the GC would have no reason to let you know that they've caught you in a lie.</p>