Primary: Pretty good from what I remember. Went to one of the better local schools.
Secondary: Poor. Rampant bullying, some terrible teachers. Some were good though. Bad decisions (girl-boy segregation in science classes, some crazy set decisions (why was I in bottom set for a year??)). The local schools were consolidated into a single large school. The catchment area included a lot of the estates, as a result there were a lot of thugs.
Sixth Form: Mixed. Some very good (Maths and sciences, though Biology struggled a little). Some terrible. No teachers for Further Maths (thus no one in my school could do a maths degree, effectively). Unqualified teachers. Head of Sixth-form had personal troubles and was away a lot (and did history, which was a complete mess. Let's just take the issue to the... oh... yeah, she's the head of sixth form).
Uni: Pretty good! Some lecturers had strong accents and some were dull as hell, but in general they were good. The department had decent resources and lab was good.
Glad to get out of education though. The schools I went to was in a pretty deprived area and often I didn't feel teachers were qualified (especially in the more complex subjects in sixth-form) didn't offer much beyond the basics, didn't prepare us well for Uni (there was an outreach get-the-poor-kids to oxford that the "high-achievers" were invited to. No way any of us would have gotten in. For one, I didn't have a language so that struck me off at first glance, not that they told us that).
Uni was much better, but I was fed up of learning by then.
I've used my education little directly. I am now employed in a field where I'm self-taught, though it's been useful getting me here.