People do make the move, who wouldn’t be able to afford to stop work and train. Some schools will take staff on as unqualified teachers and pay them (around half of a qualified teacher) and train them on the job, funding their qualifications. There are also bursaries available for training to teach certain subjects in state schools which as tax free, actually pay more than a newly qualified teacher gets.
A few searches on google would easily bring up the information about costs and schemes for training.
Essentially though Op, your first post especially, suggested you would like to get into teaching but you were focused on independent, not because you felt a real pull in that direction (and in fact lots of aspects of independent didn’t feel comfortable to you) but because it seemed the only way you could get into it without stopping work and losing a salary. Independent schools would quickly get a sense of that being the reasoning and of course it would t make you appealing. What they want is enthusiastic people with promise, who are committed to excellence in the classroom, but also and especially a huge commitment to the wider aspects of independent education. So they might be willing to take an academic, unqualified teacher who is also a hockey coach, or will run the weekend debating competitions, and they might well sign you up in your contract to X amount of extra curricular and holiday work too. They may well be willing to train you, or train you after a year or two if you are able to bring useful things.
Of course, teaching has to work for you and your family and financial situation for the move to be viable. It can provide higher pay plus lots of stability, good pension (although the smaller I dependnetns are pulling out of the teaching pension now) but as most teachers will tell you, people are leaving in droves and the hours, workload and regulation regime are pretty punitive. It’s all the stuff behind the sense and the hours spent not in front of the class that people forget about.
I’d say look into the whole thing more throughly.
- Look into if school teaching us actually what you’d like to do - talk to teachers, see if you can visit a schools no do some observation....start in a state school.
- Look into the various training and funding possibilities - job based, institution based etc.
- Think about the type of school that fits your ethos and school set and where you will fit theirs.
I don’t think you actually sound genuinely interested in independent education. You’ve got lots of prejudices about it and really wer interested in a quick and easy way into teaching as a non-qualified who felt they didn’t have the time or finances to get qualified and have more options. However, perhaps you are genuinely interested in teaching and there could be ways to make that happen for you. Sometimes people in HE or FE think school work will be better - permanent contracts, security etc etc. Some make the leap and lots decide it’s not for them. Perhaps it might be for you.