My maths education is odd to say the least. Did up to lvl 10 SMP maths at middle school, (group of 3-4 of us got extra work), basically gcse ready, went to high school. Deputy head thought we were lying on transcripts(he taught RE, generally retarded, explains a lot) he got called an idiot after talking for 5 mins to head of maths department, who gave me a brief test and realising what level I was at. Missed about 18 months due to two serious knee operations and recovery, then took GCSE maths a year early and only got a B, wasn't actually in a class just teaching myself.
Started maths A level early but again it was "self taught" which meant I did nothing. Started A levels but the maths/further maths was set up to learn Pure 1-6, in the same class everyone else was doing pure 1-3 over the two years, meaning again self teaching after the first week. Dropped out due to knee's again. Years later did a little maths in a foundation degree then first year of comp science degree, again dropped out due to knee's. Currently doing second year maths of an OU maths/comp degree and enjoying it quite a bit.
But basically I'm starting off where I stopped learning at about 15 having wasted well over a decade, largely down to getting messed around by teachers/schools with no teaching. Chronic pain, depression and no teaching, no motivation and essentially gave up with zero support from schools.
At least I'm doing it now, will finish it, will have done what I wanted despite all my problems and I'll have a degree out of it and better job prospects. Massively regret not having the motivation to start and finish this a decade ago but not too hard on myself about it either, just what could have been type thoughts.