It is really easy! The conditions for travelling have gotten even easier for you than they were before. To get a discount of 75 % on fare when travelling on trains and buses in the Czech Republic, all you have to do is identify yourself with an international ISIC card or a student ID card (if you are a student in Czech republic). In addition, it is not neccesary to fill in your specific route to school. Newly you can travel between any city in the Czech republic without limits.