I don't even have grade 10, let alone a high school diploma. Missing English 10, which I actually took twice, but got kicked out both times. I blame my older brothers (especially the oldest), as all three of us had the same English teacher, so by the time I got to high school, my family name was already quite, err.. tarnished shall we say. She was a bitch though. School had a policy of 4 absences or 8 lates during a semester (5 months), the teacher can appeal to have you kicked out. She was very strict with me and it was the first class in the morning, so right after being a few mins late 8 times, boom, I'm gone.
The second time she booted me, she decided to be "nice". Pulled me aside, said I'm getting 0% on all future assignments, but gee golly she's such a nice lady, she would let me take the final. So I did, got like 78% or whatever, and final mark in English was 49% (50% is passing). So either, a) she wasn't willing to bump me up 1% to pass, or b) she deliberately doctored the marks to ensure I failed. Either way, she's a bitch for doing that.
Then grade 11 and 12 were done out of country, and Canada wouldn't accept the transcripts from those schools. Then moved away from my parents when I was 17, and just never made it back to school, as it basically required starting from grade 11 all over again. Tried night school once, a community college once, then even a larger IT college, but never lasted.
Was already out of the house, had a job, bills to pay, and with the last IT college already had my first software company going that was bringing in decent money. So sitting there all day listening to some 53 year old lady asking me and 30 others to express our inner feelings towards one of Shakespear's sonnets just really didn't seem like a productive use of my time. Especially since I had to put myself through 2 years of that shit, before I could even start college / university.