Edit: This is in response to Starbug1
Not sure if you still need this, I have had similar issues where a Drama Teacher had all Triple Science classes coming up on her Google Classroom Dashboard (We also sync with Wonde & Realsmart). For some reason, turns out that she was made a "Head of Department" of Theatre school (TS). The same code (TS) was then redefined as Triple Science. SIMS.net kept the Head of Dept assignment regardless of the countless number of times the Timetable was transferred from T6.
SOLUTION: Delete the Head of Dept or any supervisor roles for the teacher via Tools ->Academic Management -> Course Manager -> Maintain Course (search for course and everything will show up and be clear!)
