Is this true? Smells a bit like a badly-formatted copy and paste from some hyper-partisan echo chamber.
When I went to private school we did:
- more subjects than my state school friends (I did 12 GCSEs, most of them did about 9)
- proper subjects (I did Chemistry, Biology, Physics, two languages, humanities etc. - my state school mates did "science", "food tech", "PE" etc.)
- an Additional Maths GCE (this was based on an old O-Level course and much of my maths A-Level the next year replicated it, which led me to believe that subjects certainly had been dumbed-down over time).
So, in a nutshell, I did harder exams and more of them. Obviously I had better resources available and was surrounded by a culture of expected attainment, rather than one which treats a "C" as something good, so I did have those advantages.
I would be surprised if good private schools are taking notably easier GCSE courses as a strategy. There have always been some differences between the various exam boards from year to year.
Further, a lot of private sixth forms nowadays offer the International Baccalaureate, which is generally considered to be more challenging than A-Levels.
P.s. why is this on the Brexit thread?