It's a tricky one, isn't it?! I wish I had an easy answer.
If working to rule would achieve something, then that would be an excellent first step. But in reality not everyone would do that, and would probably just result in performance management issues being recorded! Plus as you say, it probably would just mean the nicer stuff for the kids being dropped.
I think it depends on personal circumstances but in the private sector, if you don't like pay and conditions, you resign.
I know that's not always possible, especially if you're tied to a pension that you don't want to leave. But for some, it could be an option. Maybe moving to the private sector is a better option? If people were leaving in their droves, and unions were campaigning/communicating why, it would send out a very big message and it would force change.
I don't normally comment on this because it's easy to be misinterpreted as being unsympathetic and unsupportive, which I'm really, really not. I completely understand the frustration.
I think it's just the principle of striking - "I'm going to stop doing my job until I get the pay and conditions I want". It's a form of blackmail essentially, isn't it? I'm not saying that to be an arse, I promise! I don't know. I'm autistic and tend to see things in black and white, and I guess I just struggle with the idea of holding people to ransom until you get what you want (even if what you're asking for is entirely reasonable). It feels wrong?
I mean, if the government actually invested in our public services properly, it wouldn't even need this discussion. I think it's a very long way back from the mess it's in now. And I don't think striking will change anything.
I worked in sickness benefit claims for about 15 years. And the vast majority of our claimants were teachers. Who were all off sick long-term with.....stress/anxiety/mental health issues. And I left that profession 10 years ago. Teachers have had a shit deal for a very, very long time. Radical change in our system, funding and schooling is long overdue for the sake of our teachers and children alike.