Are lots of LEAs still using these? Should people be writing in pointing out these judgements?
Yes. Anyone who lives in an LA using the same or similar guides should absolutely invoke the legal challenge & ask their own LA to withdraw the guides. Hopefully SSA will be working on this and strategising on how to tackle other authorities. I'd also say that if anyone else has a child who feels as strongly as the other 2 amazing teenagers who stood up for all girls' rights, contact SSA & see if they can help guide you through the approach necessary. It does seem to need an active case to push LAs to have to act, but if they get lots of people challenging why such guides are still being used/relied on in light of the SSA cases, while SSA find other girls willing to challenge other LAs, all that helps sharpen their focus on the risks they're exposed to in failing to act & remove the guides.
The EHRC are clearly not that confident in their school guide they intended to publish last autumn, otherwise as Spero says, they'd also be dealing with a challenge to it. If the TRA strategists have deemed it necessary to pass the buck to the EHRC re school guide, rather than take on the challenge of a JR, then the pressure on EHRC is greater now too. They're sitting on that guide for many reasons & the success SSA has had is certainly going to make them far more twitchy than they already were over that guide.
I cannot stress enough the importance of SSA's impact here. Every legal dept & legal advisor LA's rely on now have to factor SSA's success here into their 'prospects of success' evaluation. This is huge. Testing the law with an active case is still important, but equally, these victories still have as much of an impact on the level of risk LA's face by maintaining support & use for the same or similar guides.