Hi I have a fair bit of experience of the grammars especially the girls
Ranked in order of difficulty to get into
Aggs
Sale grammar
Loreto
Also Stretford and urmston but I don't know anything about them
None of them are easy.
First dd sat for all of them and passed for all of them. She went to loreto and I can't sing its praises enough. It is religious though and I wouldn't recommend it if you're not on board with that. The girls spend a fair bit of time in chapel and do regular retreats.
Second dd was able but not as much as dd1 she sat for loreto and passed. Didn't bother with the consortium as I wouldn't have sent her to any of them even if by some miracle she passed. She in Y8 and absolutely loving it.
Obviously everyone looks for different things in a school but my own personal view on the school is I would never send my daughters there,
I have around 10 friends with daughters there and none of them have had a positive experience. One left as her mental health was in tatters a lot of girls do have eating disorders and there are quite a few cases of self harm.
Unfortunately you could argue that this could just be the case for teenagers at any school but the academic pressure definitely doesn't help.
I went to the open day for dd1 (granted was a few years ago) the girls were lovely and obviously very able but the head teacher put me off the school as soon as she started to speak.
I found her incredibly arrogant. She basically said our school is the best if your daughter likes homework and is clever enough great, if not there are plenty of other good schools.
I see her a lot now through something outside of schools and my opinion hasn't changed.
If you are determined for your daughter to go there I would suggest trying to get her into either Bowdon or Hale Prep as they seem to prepare them best for the exams. State primaries do nothing (or at least ours didn't).
While I really like living in Altrincham another thing to think about is so do a lot other people with kids. Trying to get them into any extra curriculum things can be a nightmare as everyone has massive waiting lists. This is also the case with tutors so book early if you are thinking of going down this route.