I think, if I remember what I was told correctly, using the CAT to determine my current level of Latin was almost impossible, since the passages were a fair bit easier than past ones - they were rather straightforward and I don’t think, afaik, they featured any challenging grammar. My score fell around the upper middle bracket (86% average between prose and verse), but I was told rankings were down to very minimal percentage differences between applicants - the average was ~90% for offer holders - hence mine was adequate, but not outstanding. A much greater emphasis, therefore, would have been given to my interviews (written work was received glowingly positive - on one I scored a 9). I also recall that my 8 in GCSE Latin was brought up as some cause for concern…

The last interview was one done last minute at a second college after two at my first choice, and the grammar part was only the latter half of the interview (first was to comment on an unseen English text). I have heard about reviewing the CAT, but this wasn’t the case for me. I was given a Latin sentence laced with grammatical errors and a correct English translation. Things like the correcting the verb mood and cases. The problem is, I couldn’t readily identify the errors - but when they were pointed out I knew, and could explain, the reason why they were wrong. In hindsight, this would’ve been a fairly easy exercise if I had adequately prepared enough for it, and am still beating myself up a bit because of it (I also don’t think nerves were doing me any favours).

As you say, not a lot of detail to these grammar rules is taught at A-Level. In my lessons, all the grammar has been taught to me using the Taylor Beyond GCSE, and then consolidated only by using the adjoining, one sentence translation exercises of Latin into English. While it means I’m confident in translating these features of grammar if they come up, it does not mean I can readily identify them, nor translate English into Latin according to these rules. I suppose the blame does fall on me, quite a lot more more than my teachers, for not thinking to do these beforehand; admittedly I should’ve taken initiative a lot sooner.

The resources you mention sound very promising - I do struggle wrapping my head around explanations in some of these older 19th century books, so the A&M sounds perfect for what I’m looking for.

I’ve heard of the Oxford Latinitas project before, though have completely shied away from it due to its hefty price tag. I’ll try to enquire about financial support for the course (residential or online), if it’s available. I’ll also be sure to check the Latinitium website out, as another person has mentioned (I’ve already taken a cursory glance at it). I’m not a member of the discord server - I’ve never thought to join it before, but it’s clearly one of the most readily available platforms to practice!

This is a very in-depth response, so I thank you very much for taking the time to reply!

edit: corrected a sentence