At my secondary school, Latin, Greek and Classical Studies were all distinct subjects. It was uncommon for someone to do Classical Studies and either language -

At my secondary school, Latin, Greek and Classical Studies were all distinct subjects. It was uncommon for someone to do Classical Studies and either language - rather, Classical Studies was seen as the “can’t hack Latin/Greek” class, and most switched to it after the mandatory year of Latin. Of the people I schooled with who are now classicists, they almost universally studied Classical Studies. The linguists, only one, as far as I know, is now a classicist. I think the explanation is straightforward. The language teaching is, or was, practically designed to make you despise the topic. Classical Studies involved field trips, videos in the classroom, archaeological surveys - and was positively engaging. Therefore, people who studied the languages, usually at the behest of their parents, ran from the classical world as fast as they could. The ones who dropped the languages and did classical studies instead, found themselves engaged by the subject matter and went on to be classicists.