<p>Best way to find out is to just get a few of those GMAT books and try out a few practice tests, and you can see for yourself.</p>
<p>I don't recommend taking it very early. Keep in mind that the GMAT is only good for 5 years. Maybe at the very end of your senior year, you can think about taking it. But even then, it may pay to just wait.</p>
<p>The GMAT consists of three sections - writing, verbal, and quantitative. It's hard to say how "hard" it is. For some people, it's easy, and for others, it's the hardest thing they've ever taken. It's hard to compare it to the LSAT because it tests different things. Taking the GMAT is like taking any other standardized test, though. You're timed, you have different sections, there are proctors, etc. But one thing you might not be used to is the fact that it's on the computer.</p>
<p>A 600 score is in the 70th percentile. So a random person's chances of scoring above 600 is about 30%. </p>
<p>I wouldn't take the GMAT until you nail down your target date for going to business school.</p>