We learned OBERON in the first programming course. There were also oberon workstations available for students to browse the web, but nobody was using them, so they got replaced.
Yep, my introductory programming course at university was also based on Oberon (actually, it was the second course, the first one was based on Miranda).
I absolutely loathed the interface with the interclicks and crummy text editor.
The concepts in the system were good. In my opinion it was just an utter usability failure.