Thank you, Igazor and Keiomestre.
1. I take it I could try and age down the sim, but it's risky. As I'm talking about several sims, I should probably drop the thought.
2, The original SV science center has always had issues for me. When two sims arrive at exactly the same time - for example with the same carpool vehicle, one of them gets placed in that hedge. The only possibility to solve that is a full reset of the sim. If it's one going to school, his homework will be gone then. Deleting the hedge was an easy solution though.
As far as I have seen on the NRAAS board, I'm not the only one with the issues with the SV science center and the NRAAS careers mod. I followed the suggested approach to try the last test version of the mod, which made the situation slightly better. The automatic push of students still fails (if I do a manual one before the automatic one kicks in, that one fails too), but I can at least do a manual push after the automatic one gets canceled at 9:30 am (this didn't work without the test version). That worked for me, but it doesn't work for the townie students the mod sends there; they will fail school because they will never be able to get there.
I guess I have to look up the commands that show me the science centers of other worlds. Those seem not to be visible by default.
