I'd be extremely surprised to find any Marxists in an American high school. Neo-Nazis, white supremacists, sure, but not Marxists.
The story tells us virtually no significant facts. Are the students blacks, whites or Middle Eastern? Anti-Semitism exists in all three groups and in sub-groups of the three groups as well, and for different reasons and historical causes in each group or sub-group. I've never heard of La Quinta and have no idea what the likely cultural background of the kids would be. It's even possible that the intention behind the game is innocent - - dumb, but basically innocent. That would depend in part on the meaning of "Beat" in the title of the game - - "beat" as in "outsmart, outwit," or "beat" as in physically beat the living shit out of him.
Whatever the origins of this game and regardless of how much actual anti-Semitism it is revealing, it is my contention that the continuing assholism, inhumanity and brutality of the Israelis and their military is growing anti-Semitism at an exponential rate all over the globe. And it's my kids and grand-children who are going to have to deal with the legacy of those shit-heads and the crypto-Nazi American conservatives who egg them on.