Crikey yes I had one of those baskets too and trying to carry a pyrex dish filled with whatever we`d made in cookery class and aboard a crowded school bus was a nightmare. It was ok when we made small cakes, biscuits or something which was dry but our domestic science teacher frequently made us negotiate coq au vin , rice pudding and other things which usually ended up spilling from the dish into the tea towel wrapped around it in the basket.
She even insisted that all homes should have a stock pot to which left over meat, chicken or veg would be added daily, the stock boiled heavily and then used to make soup or add to gravy or add to a casserole. I once commented to my Mum that Mrs S said we should have a stock pot and my Mum being a plain talking Lancashire lass who worked in a mill when she left school, looked at me and declared exactly what Mrs S could do with her stockpot !