Not from parents, no.
Home counties primary school was good about this in year five/six. We had a six part video series which was probably produced by the BBC we had to watch, which was mostly about puberty and growing up.
Early episodes were with a family of nudists. Episode four was paused halfway through and the boys were dismissed back to our classroom from the video room and told about ‘nocturnal emissions’, and the girls arrived later on with goody bags of sanitary products. Episode five showed live video of a birth. And episode six was the sex one, which was all demonstrated through cartoons.
Surprisingly liberal, really.