Thanks for sharing your story. I am also mixed race, Black (African American) and white (Ashkenazi Jewish). I did get a DNA test to confirm my ethnic origins (among other things) out of curiosity. But of course people can't know my ethnicity just by looking at me.

I faced more race-related challenges in middle school than in elementary or high school. I wrote about my experiences earlier this year:

https://funcrunch.medium.com/mixed-race-and-rootless-f05a2ad96d96