I remember getting dinner money from my poor old mother and not spending it on school dinners. As my school was close to a variety of shops, it was no problem to buy chips, cakes etc. At the beginning of the week, when I was comparatively well-off, I enjoyed bags of chips, sometimes accompanied by a battered sausage or fish cake (couldn't run to fish, even in those days) followed by iced buns. By Friday, when funds were depleted, I was reduced to eating 2ozs sweets, a sherbet dab, or threepenn'orth of broken biscuits. I was joined in these illicit feasts, which were normally consumed in a nearby 'back alley' away from the prying eyes of roaming prefects, mothers out shopping etc. by a couple of my friends. Our walk back to school took us past the boys' Grammar School and, of course, we were scandalised by the catcalls and wolf whistles which happened every day!
Sorry to go off-topic, but the mention of school dinners set me off thinking. My mother never found out what I was doing.