Elementary (1950 to 56) and Junior High (1957 to 59) an equal mixture of White and Hispanic, with a few Black, and Asian students. In High School the percentage of White, Black, and Hispanic about equal, with quite a few more Asians. There was racial tension and some gang activity, but mostly, in the 50s and early 60s people had a propensity to hang out "in their own racial groups" (perhaps it is still the same now) and not bother anybody.
My best friends were mainly Hispanic and Asian until I reached High School. I played basketball and except for me (white) and an two Asian kids (Japanese and a Filipino), and this is not a stereotyping just a fact, the rest of the team was Black. The team was very cohesive and very good.
We won a lot of games and I even got to play a few times. Then, I joined the military and my unit had mostly White and Black members (both groups mainly from the South). I fit in easily within a diversity of racial groups because of my experiences in school.
I am an Australian in grade 10. About 60-70% of the students my Primary school (grades 1-7) were white, with the remainder being about evenly divided between east/south-east Asians and blacks (mostly refugees). That was a relatively poor suburb (In Australia, suburbs range from very poor to very rich, while the CBD (inner city) and nearby suburbs are moderately wealthy).
The High school (years 8-12) that I am attending is in a slightly wealthier area. The students of this school are approximately 70% white and 20% east Asian, with several south Asian (India, Sri Lanka, Pakistan, et cetera) and African students. About 20% of the aforementioned white students were refugees from Bosnia and Herzegovina.
In Australia, middle and junior high schools are rare and I am not sure what a "grade school" is. These were all State (state-funded and state-run) schools.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.