Isaac's 5th birthday party

Let me start by saying that Isaac is five, and it is great. I think he finally got what birthdays are all about and why they are associated with numbers.
Also we had Shane from "Scales and Tails of Utah" come to the party and he could not have been better. I almost feel like persuading Kaitlyn to have a snake party also.
That said, there was a hiccup in the event this year. Isaac is child number one, so he gets all the experiments. The experiment this year was a friend birthday party. Isaac was in preschool all of last year and is a very social guy, he always told me stories about all of his friends when he came home. I have always thrown family parties for him, but I figured now was his chance to have all of his five year old friends over. We gave out invitations with brightly colored snakes in them on the last day of school a month ago to all 17 kids in his class.
Not one of them came.
Why?
Is it because his birthday is in July or is it because all but two of the kids in his class were Mexican? I am not being derogatory when I say Mexican, I could say the US census word "hispanic," but as everyone of those kids was from Mexico I don't see the point.

I'll be honest, I'm hurt. I've defended this little elementary school all year saying that these little folks from Mexico were doing the best anybody could, that their parents were focusing on their educations and that they were well cared for and polite and that Isaac was in no way suffering from having an entire class of kids that were different than him.
Apparently different to them meant they couldn't be friends.
I've tried to be good and be tolerant and not care that my neighbors aren't legal and they eat goats, but I also want my son to have friends. I guess when the Mexicans live in a community with so many other that are the same as them they don't have to be friends with the one white family on the West side of Salt Lake, but what are we supposed to do?
Luckily when the snake guy put the scorpion inside his mouth Isaac forgot that none of his friends came.
I realize that probably a lot of this is my fault because I am not very good at making friends, it takes me about three years to be friends with someone. Even if all of those ladies that waited outside the preschool door with me had spoken English I doubt that we would have talked much more. I waved to Jennifer's mom at Walmart once, I thought we were making headway.
At least Isaac still had a great party, once Shane, the snake guy, realized Isaac got shorted on the friends he pulled out all the stops with a scorpion, a lizard, and a tarantula. Plus Isaac and Kaitlyn got to hold all the snake they could handle.