The long-distance railway station is Kassel-Wilhelmshöhe. You can also get to Kassel Hauptbahnhof by regional train. Train information is available at: www.bahn.de.
Bahnhof Kassel-Wilhelmshöhe -> Kunsthochschule Kassel:
Take tram 3 from Kassel-Wilhelmshöhe (station) in the direction of “Ihringshäuser Straße” to the stop “Kassel Rathaus.” Change there to tram 5 in the direction of Braunatal to the stop “Heinrich-Heine-Straße/Universität.” Timetables for trams in and around Kassel can be found at: www.kvg.de.
Long-distance buses stop in Kassel at Busbahnhof Wilhelmshöhe and at the P+R Parkplatz Kassel-Ost. You can find suitable bus services using search engines.
nextbike is the bike rental system in Kassel. You can find one of their drop-off stations in front of the South Building of the Kunsthochschule (Menzelstraße 15). The first 60 minutes are free of charge for students at the University of Kassel. Further information at: nextbike - campusbike.