I am a former unista and I cannot speak highly enough about their organization as a whole.
That being said, it is a very low pressure, learn at your own pace sort of environment. Which has its positives and it’s negatives. If you do go the uni route and are interested in mining. I would actually advise AGAINST joining the mining campus. I would instead recommend joining the null-sec campus (my old home). There is plenty of mining and industry out there. Plenty of people to show you the ropes. Better ores and PI. Much better missions right in the home pocket. And regular opportunities for pvp.
Not only will you get better ores for your mining. But also a much more rounded overall experience and skill set that will prepare you for wherever you go next.
The uni lectures are also damn good. And they are available to everyone, uni or not. (Although the practical side of some classes may be restricted)
Overall they get my whole hearted endorsement.