@WhattodoSue
I was a bit worried about Cambridge Maths because I know an EXTREMELY bright girl who adores maths who was rejected (she is going to Oxford instead, she took a year out and re-applied). I think I read that only 15% of the course are girls. But I might have that wrong.
I do not have any special knowledge or insight, but I have also seen some internet chat about that 15% figure. You can find admission statistics for the 2024 cycle here, and for the 2023 cycle here. They show some limited recovery:
2024 Mathematics
Applications: Women 25.9% Men 74.1%
Offers: Women 29.5% Men 70.5%
Acceptances: Women 22.7% Men 77.3%
2023 Mathematics
Applications: Women 26.3% Men 73.7%
Offers: Women 28.6% Men 71.4%
Acceptances: Women 19.4% Men 80.6%
The primary gap (not unique to Cambridge, but very painfully visible here) is that women are already put off from applying. We see this at my university also (at least for physics where I have more direct knowledge), where we have been unable to significantly increase applications from female applications, despite regular efforts.
Getting back to Cambridge, offers are roughly comparable to applications. But there is another significant drop in converting offers to acceptances. There is nowhere near a comparable attainment gap in A-level maths outcomes, so this is perhaps attributable to STEP.
I do think DD’s school are likely to do some preparation
This is likely the point where help is going to be most effective. I have taught the Y1 maths courses for our physics students for several years. Students often arrive from A-level with the expectation that questions will fit into a few standard templates. STEP questions are not like this; they typically need students to link up knowledge over a wider range. Sometimes seeing how to get started can be quite challenging.
If a student is able to tackle STEP questions straight away, there is no problem. But otherwise, I think it must be a demoralising experience. If the school, or another tutor, is able to show your daughter how to get started, and demonstrate that she really is able to tackle the questions, that may be a big factor in getting over the initial speed bump.
The Murray Edwards STEP summer school is here. The other one is run between Trinity (usually very strong in mathematics) and Christ's (my old college) and is here (Trinity) or here (Christ's). Unfortunately, for this one, she seems not to be eligible if she is at a fee-paying school.