Use your ISIC to buy student ticket for public transport.
KORDIS JMK is a company that operates the Integrated Transport System of South Moravian Region (IDS JMK), which includes a network of trams, trolley buses, trains, urban and suburban bus lines and also the ferries in Brno.
IDS JMK is divided into a plurality of relatively small tariff zones. With a total number of 721 municipalities served (674 are in the South Moravian Region), one zone covers about 4-5 villages on average. Brno itself is divided into two zones.