Not necessarily wrong, it gave me a very good grounding for the rest of life. One lesson I learned quickly was that if everyone else in the room can't be trusted to hold a blunt pencil then doing what I was told got me a lot of latitude to do basically whatever I wanted.
I spent a very pleasant couple of years planing plywood for my coursework and handed absolutely nothing in, causing several conversations about how the coursework was 60% of the final grade, I couldn't hope to pass etc. As it turned out the exam was written so the mongs who tried to eat screwdrivers could pass (sample question - name a non-ferrous metal) and smartarse here got nearly full marks so still scraped a C grade.
I arrived back in the UK from Oz when I was 14 - halfway through secondary school where I managed to blag my way into one of the local grammars.
When I attended my first woodwork lesson and the teacher told me to pick something I wanted to make and do a drawing of it I just did a freehand drawing. I'd never heard of technical drawing with dimensions etc.
After being shouted at for 5 minutes I was cast off into a corner to make a small table top bookstand.
It took me 3 years to make and I was really pleased with myself until I put a couple of books on it and it fell apart.