<p>What exactly does this mean?</p>
<p>It means just that - you’ve been admitted, provided that your final grades/A-Level scores/IB scores don’t suck.</p>
<p>Actually, it’s provided you graduate from high school. They don’t revoke if your grades go down (unless it’s catastrophic, like all D’s or something; that never happens), but they can’t take you until you get your HS diploma.</p>