I've been teaching for 28 years.
This year I've been class sharing a Y1 class with a teacher who's been teaching for 3 years.
I teach 3 days, she teaches 2.
She's lovely. Very enthusiastic and has lots of great ideas for a 27 year old. I see a lot of my younger self in her. She over plans, makes work for herself but that's all part of being a newish teacher. She will eventually realise she needs to drop a lot of what she does before she burns out.
When she's not teaching Y1 she covers in EYFS, so she's round and about school.
But she keeps telling me little things that I should be doing. Eg, telling me to send the kids to the toilet before I got them changed for the nativity. Telling me I need to get the kids to empty their trays and lockers before the end of term.
She will come into Y1 when I'm teaching and stop the kids and speak to them. It's very inappropriate.
I spend half an hour in Y1 on one of her teaching days as the TA arrives late. I collate lunches and change reading books. During that time I barely speak as it's her teaching time not mine.
It's driving me crazy.