How to choose A-levels (both subjects and school vs 6form )

My area only has colleges, no school 6th forms.

My analysis is from visiting places and seeing how children of friends have got on with A levels is this:

School 6th form:
Teachers you know and who know you
No settling in time to new environment
Possibly better pastoral support in a school setting
A peer group you already know more of
Possibly more structured than a college - more school like

College:
Your teachers have to get to know you from scratch, and you them
New environment might take time to settle
Chance to spread your wings, new freedoms, new friends, more independence
A better half way house towards university

If a young person is still immature, not ready for more independence, or maybe needs strong pastoral support, maybe existing school is better. Whereas if they are maturing and ready for a challenge and to step up maybe a college would be better.

NB Neither of my DC did A levels!

Also note this is assuming teaching quality isn't much different.

I do remembering seeing a board at one school with a list of what a levels would be useful for what careers - her only career idea is journalism at the moment so she's really just going with what she likes / loves which is English and couple of others. She's planning on an English degree.

My DD is just about to sit her GCSE's. She is very much focused on university for for her it's a levels not vocational.

The colleges locally don't really do a levels just btecs etc so that rules them out.

Her school is a partially selection comp and has good a level results. There is one subject they don't offer that she might have liked but it's not a deal breaker. She is generally taking the subjects she likes most - they are humanities subjects. She's pretty strong in everything but science so most things open to her to consider.

So for her it then came to school - stay at current school or choose a different one. All the other comps have lower a level results from her school so no point moving to them. She is predicted scores to get into one of the grammars for 6th form but as a high achiever in her school she feels she gets a lot of additional support that she may not get if she was lost in a sea of others. Plus the girls grammar is very very stem focused - huge numbers going into medicine - that's just not her area of interest. They had very small numbers doing a level english in comparison.

Apparently her school has said for first couple of weeks they can sit in on other a level classes to get an idea if they like the subject (if it's a new one) before they commit which I think is great. They are also open to them starting with 4 and then dropping one.