What you learnt on job, that you didn't learn in school
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I am using SVN at work, and use git (on GitHub) for my side project. I wish my school would teach git because it seems so confusing to me.
I graduated years ago before git even existed as did many others. We all managed to learn git. This is the nature of computing. Things change quickly and sometimes radically. The sooner you learn to learn on your own the better.
Seriously though I left education 24 years ago and now looking back that was pretty much the period of lowest density learning I've ever had. Since I left education I have been learning constantly.
As an employer the main things I need you to come to me with from your education is: how to research things on your own, how to learn new stuff without being spoon fed and if possible some good solid and broad theoretical knowledge. You will pick up source control and all that stuff up from your co-workers.