how often are gmat tests held?

<p>i couldn't find anything about this on the gmat site? are there many testing opportunities throughout month/year? application deadline for schools june. can anyone give some idea how hard it is? how long it takes to study if you been out of school for a while?</p>

<p>I don’t know if you still need this…but they’re held in the last 2 or 3 weeks of every month.</p>