In the UK what are O-levels and A-levels?

As is my understanding O-Levels are lower than A-Levels, I think O-Level is like a Grade 11 subject (i.e maths) then the A-Level is harder and more advanced (i.e advanced maths)

O-Levels were replaced by GCSEs which are standard high school qualifications. A-levels are a logical next step at college and are generally required for university. There are other means if A-levels were never taken.

Are they like the brittish version of “thetan levels”?

O-levels (Ordinary Level) are now replaced by GCSE’s (General Certificate of School Education), you take these at age 16. A-levels (Advanced levels) are taken at age 18).

To get into university you would require A -levels, however you would also require good (A-C) passes in core GCSE’s such as maths and english as well.

And just to make it a little more complicated schools are starting to offer the IB (International Baccalaureate) which appears to be much harder than A-level or at least appears to consume much more of your time than if you did 4 A-levels. The IB are another form of qualification that replaces A-levels if you want to apply for University.

@Lightlyseared I know plenty of people that get into university without A-levels. They’re not always required, especially once you’re classed as a mature student.

@sebastian_von_tulu as the question was about school education I did not think it worth mentioning APEL or access courses.

Thanks to all