what A levels do I need to be a secondary school teacher?
Depends what you want to teach, you need a degree that contains 50% of the subject you want to teach. So if you wanted to teach physics, you would need an A-level in physics and maths to get onto a physical science degree. If you wanted to teach law then your choice of A-levels isn't crucial.
what A levels do I need to be a secondary school teacher?
What do you want to teach? As others have said, you need a degree to teach at primary or secondary level. What A levels you need depends on what you're hoping to teach - though once you've qualified as a secondary school teacher you can be asked to teach anything
Depends what you want to teach, you need a degree that contains 50% of the subject you want to teach. So if you wanted to teach physics, you would need an A-level in physics and maths to get onto a physical science degree. If you wanted to teach law then your choice of A-levels isn't crucial.