The ultimate Mac design I had one as my work laptop, when I worked, and loved it. Just bought one from Amazon in excellent condition with great battery life Love it
Which you did to not sign in your Apple ID is actually could be correct because I am not sure from which Mac OS version did this problem occurred, but it will not allow you to agree to the T&C after logging in it will be greyed out, so it’s better to do it later
Did you know that the 2017 macbook air can also run El Capitan? It can even run Yosemite. Because they’re basically the same laptop, except the 2017 air has a 1.8 GHz 5th gen i5 compared to the 1.6 GHz 5th gen i5 that the 2015 has. I know that this is possible, but I’ve never seen someone doing it and i would love a video on yosemite or el capitan on the 2017 air
Which interestingly what I am seeing in the keyboard layout must be you may have the same MacBook that I bought myself which is the aluminum 2013 MacBook Air which is actually older then the MacBook Air you said that your school gave you.