Is anyone else's skin better in the summer than during the school year?

I'm a 14 year old girl so most of you will blame break outs on my age, but that's not true. I started puberty when I was 12. I never get acne during the summer, only school year. Also, I come from a family with extremely clear skin all through their life. I also eat healthy too. I don't get bad breakouts during the year, just a pimple or two every few months, but during the summer my skin is smooth as a baby's butt. I think it's because I get stressed at school so I touch my face more, but who knows. I also heard the sun helps with acne? Maybe that's why because my family also tans really easily and during the summer I'm practically black, lol. Am I the only one who has clesr skin during the summer and breakouts through the school year, or no?