I just had 17 years. I was in scientific class at school. Unfortunately such class require quite lot of work. I did not worked enough that year and I had to start again the same class the next year.
Spending too much time on coding was very interesting and surely gave me strong basis for my future life as a programmer.
Failing my school year helped me to understand how to manage my school life and my coder life (I was also doing lot of sport). From that point, I did not failed any school class anymore.
Photo of me at school: (second row from bottom, second position from left, green sweat)
Cool demo of that time
Prism Vectors By Red Sector (Surprise Productions)