I would put myself squarely in the middle of middle class, same with my sister. I would put mom and dad in the upper-middle class though.

Given Beskar's chart, I fall into upper-middle class, and my parents are upper class. That's cool with me, seeing how they both started out as working class and by the time I came into the picture they were still working class. They busted their asses hard to get themselves where they are today and to give me and sis the education and opportunities we have now.

As much as we try to ignore it, classes/castes/stratification of society can and will always happen. There will always be the haves and have-nots and the inbetweeners.

Really though, it's about what makes you happy in life. Work toward what you want to do and where you want to be, and it shall be so. (I don't buy the 'I'm not smart enough' argument at all, that's BS and a huge cop out for 99.99999% of the people who use it)