Statistically, in some subjects like Maths, with less than an A at GCSE (old measures - easier specification) the majority of candidates got an E or U.
If you think that's worth going for, worth funding etc, then you think differently to me. What I'd say is that people need to be aware of the likely outcomes from different starting points.
In other subjects an A or 7 won't be needed, but a 6 often is. These students will usually get C-E grades and usually at the lower end. As mentioned,there are university courses for them. I really think that someone being allowed onto an A Level in a subject where they got a 4 at GCSE is extremely negligent. The reality is that their chances of passing the A Level are very low.
Can anyone give examples of subjects where the kids are admitted into A Level with a 4 in that subject? The only reason I can see that happening is colleges or schools desperate for funding and more interested in that than the students having a decent chance of success.
A Levels are as their name suggests advanced study. A Level 4 has not been called a 'good pass' and while is meets a certain standard is not the standard suitable for A Level study in that subject.
I can see there is a difficulty for students with all 4s and 5s about next steps. However, I think appropriate courses and steps after those courses are needed and A Levels and university degrees are often not the appropriate steps. Again, simply wanting to do it, doesn't make someone suitable. It also does have to mean they are 'written off' - but other good options need to be available. And if they aren't, that still doesn't mean A Levels and uni are the right options or where they are likely to be successful.
I would say to people in the position of a child with 4s and 5s wanting to do A Levels, ask the teachers at the school/college to give you the results of students with similar GCSEs over the last few years. That can be eye opening. And if the requirements strike you as high and excluding your child, ask why, and they will explain the outcomes for those with lower grades. It might not be hat you want to hear, but it's worth hearing the reality. In our day, someone with 4xC at GCSE was pretty normal for A Levels and whilst probably not leading to stellar A Levels and Universities got some a series of Us and others 3 lowish grades which then got them to a lower level uni. With grade inflation etc, more is needed these days to access the A levels and do well. League tables mean schools don't want lots of Us, but they do want the funding students bring and there is always a tension there.