I don't have any experience in teaching, but I'd venture to say that teaching anything is hard. For most subjects, teaching has been refined over thousands of years to be easier and meaningful. Not CS. As has been mentioned by many people CS is a very new subject when compared to the likes of maths, for example, and education systems haven't been able to cope with it adequately (nor should they be expected to).

That the CS industry is rapidly evolving certainly doesn't help matters, but in reality that shouldn't really be that big of a problem (at least in earlier years of education). The basics of computer systems and programming don't really change that much (please correct me if I'm wrong) and logic stays the same. Even if you learn stuff that's a bit out of date it can still be useful and good lessons should be able to be applied to new technologies and ideas.

Broken computers is a big inconvenience, but a lot of very useful things can be done without a computer, and I should think the situation is a lot better than it was 5 years ago. What I think would be good, instead of trying to use broken computers would be to get students to set up and use a raspberry pi each; you learn about something other than windows, learn how to install an OS and you don't need that much computing power for teaching people computer science.

I think the main problem is a lack of inspiring teachers. Only a very few teachers will be unable to get you through the exams if you put in the effort, but quite a lot of the time students don't put in the effort because they can blame it on the teacher.

My solution would be to try and get as many students into computer science as possible and the rest will follow: more people will become teachers, more will be invested in the subject, more attention will be payed to the curriculum.

That's not to say I don't agree that many of the problems that have been mentioned need to be fixed for CS education to work properly, just that there is no way that I can see to fix them currently without either creating more problems or some very rich person giving a load of money.

This has gone on a lot longer than I expected so I'll stop now.