The teacher was welcoming the kids to their new year in school and was going through some 'house keeping' rules. She wanted the kids to treat the classroom as they would their home, keep it clean and tidy.
During my recent tour of the UK around family and friends I've been met at every door with a hug and 'lovely to see you, you look well, come in, kettle is on, let me help you with those bags and please excuse the mess'
Every house I've visited either has kids in it or building work, redecorating etc going on, or a combination of both.
Without meaning to cause any offence, yes British houses are messy, not dirty, just full of clutter, stuff, things and not a maid in sight. They are like this because British houses are smaller than South African ones, smaller rooms, less space for storage, they are like this because there isn't a maid running around behind them, cleaning up.
It's not just the space that helps keeping a house tidy, it's not having kids living at home.