I’ve had sites unblocked and teacher access to youtube can be used for tutorials. We’re running this in S5/6 with a group of 20 and it’s going really well. Currently all at level 5 with some moving onto level 6 later.
It’s going to be a major part of how computing is delivered (I think, anyway!) so I’d pressure them for access – even just to a few resources such as stencyl.