I'll come back and post some more specific thoughts later, but I just wanted to say I can't believe it has to go this far for you in the first place. I wore a kilt on several occasions in my high school, even on regular school days, and my school staff loved it. My teachers all wanted to know my roots, my principal (non-Scot) thought my sporran was neat, etc. My friend and I just randomly showed up one day both clad in kilts, sporrans, and t-shirts, and the only thing we heard from other students was, "you guys have some balls....." I was also kilted for my graduation, and still hold the record for being one of 2 guys ever at the school to be kilted.

It's sad to me that people would dismiss it off hand. Of course my opinion is biased, but to me it seemed to be an immediately recognizable piece of heritage and pride. But it's still so misunderstood sometimes, it makes me wonder just how much people know about the world at large.