Yes, it's called [The Learning System](https://www.ibm.com/it-infrastructure/z/education/master-the-mainframe https://www.ibm.com/it-infrastructure/z/education/

Yes, it's called [The Learning System](https://www.ibm.com/it-infrastructure/z/education/master-the-mainframe https://www.ibm.com/it-infrastructure/z/education/master-the...). I've done it twice, it's fun. You get the same tasks the students get, which is (on the whole) a nice tour around the system. And nobody keeps you from playing around and writing and compiling a few programs on your own. It's a virtual system which gets reset when they start a new round. And I'd assume they've set up proper resource controls so you can't damage stuff.