Took O'Levels in 76 - the last year you could fail.
I managed to fail 2 in 1979
. I had a year at Grammar school before all our schools went comprehensive.
My DM worked mornings but only during the term time. She briefly worked in a nursery and it was a horrible place; really smelly and lots of kids crying.
I do remember the power cuts and shortages. I remember being told to fill up the bath with water because it got turned off but I've no idea when that was. I also remember being sent home from secondary school because there was no heating; presumably during the Winter of Discontent; and my DF having to queue for petrol, which was being rationed.
As far as after school activities went I had Brownies/Guides; ballet, tap and National then Modern dance; piano lessons and Sunday School. I can clearly remember having an activity every night of the week. Weekends my DF played sport so after the weekly shop (and Picture Club for me and DB) we all went off to where he was playing. The wives all sat together and chatted and all the kids went off into the fields. Nobody knew where we were or what we were doing, and nobody was interested as long as we turned up for tea.
We ate our main meal at lunchtime and my father came home from work. My DM was very conservative over food so we had a variation of meat, potatoes and 2 veg every day except Saturday which was cold meat and chips, or egg and chips. Pudding was pie, crumble, rice or Instant Whip (we rarely were allowed Angel Delight). My DPs thought the people next door were a bit Odd. They were from London and ate Brunch and yoghurt, and had dinner at tea time.
We had a lot of sugar. Sugar in tea and on breakfast cereal and on fruit. I was first given tea (from a saucer) at 2 months old!
I don't think I'd have liked to have been an adult in the 70s but it was a great time to be a kid.