Let's look at hourly rates properly by showing a current job ad for an LSA (known colloquially as a TA) an HLTA (Higher level teaching assistant) and then my trusty chart used for calculating overtime for payroll etc (I'm an office lady) - it gives the scale and lot t and the hourly rate for that calendars and point. This is for non London or fringe, and they are local government pay scales, so someone working in a little village up north could in theory be earning the same as someone in a commuter town, in which case you'd feel it in your pocket.
You are looking at somewhere between £12.18 per hour to £14.17 depending which ad you'd apply for.
You can bang on about the Tory government as much as you like but in the pay ballot last year, support staff voted overwhelmingly NOT TO STRIKE. There may be many altruistic reasons for this, but no government will shake things up that much unless they all do. And support staff run some schools - I'm in a special school and there are more HLTAs and LSAs than teachers.
The bloke that unlocks the building in the morning is support. So is the chef who makes the free school meals. So is the lady who does payroll and pays the teachers.
But as I've said you never have to work at night, on the weekend, or even put an annual leave form in, let along pray that this year you might get Boxing Day off, and you can generally park on site and leave on time. All this gets weighed up when you consider your options.