Oh definitely! Different students have different learning styles - some learn by memorising rules (ROTE), some learn by understanding the rules (Constructivist), some are visual learners, some are better at learning in group activities, etc. - and we have to cater to them ALL, to keep them all engaged (here's WHY we have this rule, here's a video about it, here's a group activity about it, here's a worksheet to practise it). But I was referring to the TOOLS that we use with class. We can't use a tool that the advanced students have no trouble with but the less adept students struggle with - we have to use a tool that the whole class can use, and that's what I meant about catering to the lowest common denominator.

Also some (not all) schools have special classes for gifted and talented (G&T) students. And in fact one class I've had in my time is a class which was comprised of half the students had various learning difficulties (such as being dyslexic), though they weren't told that (these days it's all about trying to keep them in the mainstream as much as possible. So in this class the dyslexic student had a regular student sitting next to him for immediate help with reading anything, which left me free to only need to help him with actual educational issues).

They've been through the other side of this experience multiple times though.

have the experience of being the kid in that situation

Which kid? The gifted one, the one who didn't understand loops and used 20 variables for 20 iterations, the one who didn't understand how to write pseudo code, the one who was dyslexic,.....?

I learnt python in secondary school

Which Year? I didn't say it wasn't appropriate for high school, I said it wasn't appropriate for Year 7 as a first programming language.

that’s not a problem unique to python

No, but it's a bigger problem for C# than is is for Python (though this is changing now), so all the U.K.-based schools were teaching Python, rather than the more-appropriate C#. That was my original point - that's the dumb reason I had to learn Python, school admin's wanted the lower overhead of the worse language.

Thanks. From memory we were using repl.it, or something very similar. This made it easy for me to look at their code when they had problems (and even then, as I said to someone else, it was quite a while before I realised one of them simply had the wrong indentation on one line - I kept looking at the code and thinking I couldn't see anything wrong with it, then eventually I realised there was a wrong indentation. If it took me that long to realise, then of course that's something students are going to struggle with).

I think they introduced the programming GCSE the year after I did my A-Levels

I was teaching the IGCSE, to students all over the globe.

you can JUST learn the programming bit

But NONE of the resources which have been provided to schools do it that way - they ALL use OOP. If that's what your faculty has chosen to use, then that's what you have to use. It comes back to what I've been saying all along - the schools are dictating to the teachers what they are to teach, and it's NOT based on what's best for the students educationally, but what has the least admin overhead for them. That's the stupid reason that I had to learn Python - admin concerns!

Is the fact that C# produced executables also a problem? With python you can 'protect' non lab computers at the school by just not installing the python runtime on them. Teach them c# and I guarantee they will be making executables to cause trouble.

Generally agree with you that teachers should be able to choose at least one of the languages to teach. basic web dev stuff is probably pretty useful to them though if it includes JavaScript?