USOS, i.e., University Study Support System is a virtual space, where you will find your schedule, grades, registration for classes, contact details to your lecturers or application templates for social support. It is a type of a Dean’s Office and a grade sheet in one, which is available 24/7.
If you use a smartphone or tablet more often than a computer, download the USOS UŁ mobile app to your device, which will, among other things, send you push notifications about grades given by lecturers.