You could've made it. I had a flight at 5:15 pm and made it with plenty of time to spare. If your interview is at 10am, then you're done by 12 pm-ish, and everything else is the tour. You could skip out on part of the tour and head to the train station (which someone from the school will gladly take you to). Beforehand though, check the train schedule at the school (they have brochures). Then take the train that goes DIRECTLY to the airport terminals. I took the whole tour and made it on time, so you can just skip the last part of it; I'm sure they won't mind.