When I started to study computer sciences in Germany in 1991, we used Oberon on X11 terminals during the the initial "Praktische Informatik I" lecture as our first programming language. Oberon being new, the professor said he wanted to make sure that everyone starts under the same conditions and with no pre-knowledge. So we wrote our linked lists, hash tables, trees, sorting algorithms etc. in Oberon.

That time almost all students had a track-record coding on Apple, Commodore or Atari homecomputers and/or had worked with Turbo-Pascal and -C. Because the Oberon system was not very stable nor user friendly, the Oberon environment was met only with little support by the students. For example I remember that the compiler crashed reproducible on certain inputs. There also was no debugger and the editor did not meet expectations.

After finishing the lecture, most students (including) me, never touched Oberon again. But hey, let's re-visit it after 30 years again and see how it feels today.