To be honest I cannot recommend an X-Carve for students. I have had one in the past but it's a lot of fiddling and not very robust. When you spend a few hours on this forum you'll see what I mean. Tension of the belts, loose pullies, losing steps etc.
For 900 euro you can build a much better machine yourself. Actually that's what I did myself last year. 900 euros will give you a very sturdy machine with ball screws, 425 oz-in Nema 23 motors etc. This will give you a machine that always works like a beast and cannot be ruined by careless students.
You can basically follow the build of http://www.instructables.com/id/Building-a-CNC-router/ replacing the alluminium by multiplex/MDF and a few angle bars.
If you dare to build it, let me know: I can send you links of materials etc.
btw. I'm in Wageningen, NL