More information in the second article, certainly. And no doubt she has valuable things to say.
But she does herself a disfavour by talking about "the system" and "British education" without making it clear whether she is referring to British schools in general or a few London schools in particular.
Also, she spends most of the articles going on about how brave and unusual she is in seeing something nobody has seen before- which is clearly not true: the Ofsted inspectors have seen something and tbh anyone interested in education has known for many years that London has some problem schools.
The problem is the logic of her argument. She is insistent that the problems are not due to the parents or the children. It then follows that they must be due either to the state of British education in general or to the management of these schools in particular. If it was a question of British education in general, then you would expect to see the same problems proliferating all over the country. What you would not expect to see, if this is the prevalent state of affairs, is that Ofsted had singled out the particular school she works at as being quite unusually bad. You can't have it both ways: "unusually bad" and "inherent in the system".
What she says about racism and low expectations may well be true to some extent. But I believe there are schools with a predominantly black intake which are well managed and get good results: it would be more interesting if she had made a comparison with one of those, to see where hers is going wrong. Since she must know that what she is seeing is going badly, why doesn't she look at what is going well to learn something, rather than yell "it's all going to pot!".
It is not all going to pot: I visisted a school last week in a traditionally low performing area, where a dynamic headteacher and a number of dedicated staff have worked their butts off to turn expectations round: not only have they gone shooting up the league tables, but pupils we spoke to testified about the change in attitude, the clampdown on bullying, how they had been terrified to start at a school with this reputation and how they had seen it all changed. And I really don't think they had been primed by the head either: parents who have lived through the changes say the same.
If black pupils are being steered towards easy GCSEs, then that is the fault of the head and management: she needs to start there, not at the Tory conference.