Technically, our local universities have a new grading system. This follows from the Bologna process, which aims to standardize grading systems across the EU (among other things). However, given the considerable autonomy our local universities have, the rate of implementation varies from university to university.
The reasons for this have little to do with the new grades in and of themselves, above and beyond the basic reluctance of institutions to change anything at all. Rather, it has to do with a peculiarity of the legal status given to the new grades, and what it means to be given a particular grade instead of another.
The old system had three grades: fail, pass and pass with distinction. The difference between passing and passing with distinction is often quite significant in terms of effort, and utterly irrelevant to anything at all outside of your sense of accomplishment. The important thing is whether you passed or not, and the range of important grades stops there.
This has implications for the legal status of these grades. Given that our local universities are government institutions, and you cannot challenge decisions by government institutions that are in your favor, this means that you cannot challenge the decision to give you a "pass" rather than a "pass with distinction". The difference between passing and passing with distinction is so miniscule that it makes no difference, but passing a course is beneficial to you. Thus, since passing a course is a beneficial governmental decision, it cannot be challenged.
(It is not unheard of for students to intentionally fail a test they know they'd only get a pass on, in order to redo it later to ensure they'd pass with distinction. These minmaxing daredevils are rare and far between, though.)
The grading system proposed by the Bologna process, however, has more steps in it, ranging from A to F(ail). This might seem like a minor point, and if your only aim is to get through the educational process in one piece, it is. However, since there are more steps in the new system, the legal status of any particular grade is slightly different compared to the old system.
Specifically, getting a B rather than, say, a C, is better all around. It makes a difference. It says something about you. Something that is left utterly implicit in the old system.
This means that it is possible to challenge grades given in the new system (given that they are not an A). And students do challenge grades, en masse. The universities can't revoke a grade due to a student being annoying, but they can raise a grade if badgered about it with sufficient paperwork. Thus, the paperwork commences.
Equally thus, universities are dragging their feet in implementing the new grade system. Because being badgered with paperwork is a chore. An easily avoided chore.
If you want to understand the process of EU integration, all you have to do is to take the state of affairs described above, and multiply it across all the institutions of all the countries.
All of them.