stupid and lazy and that all Jews were unfriendly and cheap
Ha ha, I understand what Susan means. I think this part should be removed, because it may have a subconscious effect on the reader! Ha ha, in fact, it sort of... just plain reflects badly on you. Okay... I'm going to go meditate on this.
Okay!! I think it would be a lot better if you wrote about the
influences that tried to instill prejudice in you. BUT, you never really accepted these ideas. You never really believed ALL Jews were cheap, did you? So, you can say that these two high school friends helped you to solidify your idea that skin color doesn't matter.
This whole essay could use some additional reflection. Right now, the whole essay could be summed up in a single sentence: "I developed stereotypical ideas about various cultural groups while I was growing up, but in high school I met some friends of different ethnicities who made me realize stereotypes are ridiculous." I think you could dig deep and offer so much more insight.
Where do the stereotypes come from originally?