I've had the same in English, but not to the same extent.
A story I wrote got 15/15 from the two advanced teachers at our school. I then used it in the trials, and was given the PERFECT quote (it was something like "I felt the cold chill of exile" and my story was about insanity in society and used many metaphors and imagery of weather to symbolise the protagonist's experience in society, outside of a mental asylum). My story got marked by a STANDARD teacher and was given a 12. This doesn't seem like a large gap, but it was still 20% lost...
A story I wrote got 15/15 from the two advanced teachers at our school. I then used it in the trials, and was given the PERFECT quote (it was something like "I felt the cold chill of exile" and my story was about insanity in society and used many metaphors and imagery of weather to symbolise the protagonist's experience in society, outside of a mental asylum). My story got marked by a STANDARD teacher and was given a 12. This doesn't seem like a large gap, but it was still 20% lost...