Like you, I also attended high school in Canada - Toronto specifically and I graduated from my High School in 2006. So we must be of a similar age. Today I am 24.
Personally I did find the educational curriculum to be largely anti-white, however, in my own experience this bias is more so concentrated at a younger age than high school, say Canadian Grade Schools (say, grades 2 to 6). At that age I essentially learned in the classroom that the white man was evil and responsible for all human rights crimes in all of history including; stealing and raping the land away from North American Natives, oppressing Natvies and Negroes and enslaving them, and oppressing women by not giving them rights and freedoms.
I don't dispute that what whites did to Natives was wrong, and I don't dispute that it happened, but what I do take issue with is the way it is presented to kids in school because it encourages white guilt, white self hatred, and moreover it is a limited historical narrative (there's just as heinous crimes committed by nonwhites which are conveniently overlooked). I think this is dangerous and can be considered abusive because it makes many white children uncomfortable and makes them hate themselves on some level. This is the origin of white guilt and self hatred for many whites in Canada.
Curriculum aside, I attended a very multicultural highschool. Toronto is a very urban, multicultural city, it's been said that other than Miami, Florida, Toronto is the most diverse city in the world. I don't mind it to be honest, in some ways its good so long as everyone is peaceful, obeys the law, and respects others. I think multiculturalism would work better in Toronto if there were no blacks here though.
At my highschool, there were Browns (Indians, Pakistanis), Whites (mostly 4th and 5th generation Canadian who have no ties to or understanding of Europe whatsoever, sad because that is their own race's history), Arabs and Persians, East Asians (mostly Chinese), and Blacks. It's hard to estimate exact numbers, but here's a guess of the representation at my highschool in Toronto:
40% Brown
25% White
20% Black
7.5% East Asian
7.5& Middle Eastern and other
That's basically the racial composition of my highschool in Canada. I lived in a middle class area. Some schools in Toronto will be more Arab, more white, more black, or more East Asian, just depends what part of the city you're in. As a white man I was a minority but to be honest I got along well with everyone. Personally, I don't really like associating with black people so I usually didn't spend any time with black people. Just not my style.
In high school I had white friends, brown friends, and Middle Eastern friends and during highschool I also dated many Middle Eastern Muslim girls. I actually dated a girl from Afghanistan for a couple years in high school but we eventually broke up. Middle Easterns are Caucasian and I have a pro-Caucasian view so that works well for me. Some Persians are also white.
Personally for friends I prefer whites, or Middle Easterns. Brown is also OK, East Asian is doable sometimes.
I am pro-white and pro-Caucasian which means I support white rights, but more than just white rights I also support all Caucasians which includes a majority of fair skinned people and many Arabs and Persians.
At one point in my Highschool time, I even joined my school's "Christian Club", even though I am not Christian and I don't believe in the Bible. The reason I joined that club is because it was the closest thing we had to a "white or European heritage" group. I discussed with some Euro guys at the school that we should make a European heritage club, but it never went anywhere, we werent very academic! If I could go back I would definitely have followed through on that.
I keep in touch with some highschool friends, mainly through facebook, 1 or 2 guys I actually hang out with and party with still. I don't keep in touch with any of my Muslim ex girlfriend's from highschool.
All in all my highschool years were pretty enjoyable! I don't have any regrets really, but 2 things I wonder about is how my life would be different if I didn't date those same girls in highschool and maybe if I dated other girls, or just stayed single, might have had more fun, and maybe I should have been a bit more active in school clubs, I didn't really do that and kinda missed out.
I am a huge fitness guy though, I'm always in tip-top shape, I have a lean swimmer's build, nicely toned, and that came to me in highschool. I was always in the boxing gym after school or in the weight room, which was a great thing I picked up at that age and still exercise constantly today! I don't do boxing any more because of my profession, but I still exercise daily as a lifestyle (weights, stay fit, cardio etc.)