Congrats Lu! Great news!
I don't think you're mad for changing careers. I'll be totally honest and say that the PGCE year was the hardest I've ever worked in my life and I had no ties and was fresh out of uni when I did mine so it will be even harder with a LO but it is manageable. Teaching is hard work and the work load never ends but I'm sure you're used to working really hard being a solicitor anyway. I don't personally know of any primary schools making teachers redundant. There are lots of cut backs and I know our school will stop certain things like intervention projects to save money but we won't lose any teachers as we're all needed.
And much as we moan about our job I know I can personally say that there is nothing else I'd rather do to earn my money
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