Then that is nuts, and you don't need to remove calculus to fix it.
Presumably there's something you're teaching that we (in the UK) aren't, or more depth somewhere, but I don't know what it is. Our systems are quite different in that mathematics becomes optional after GCSEs (15-16yo) here, but statistics is taught from a far younger age than that, to that, and beyond for those that take A level(s) in mathematics. (As I recall there are six statistics A level modules total, S1-6, I think S1-2 are compulsory for a full A2 (vs. AS) mathematics qualification (which consists of six modules total). In order to do all six statistics modules one would at least take the second A level 'further mathematics', and probably (pun intended; unless statistics was a particular passion and the school allowed it) 'further additional'.
NB I quite liked that structure - there are 18 'modules' total (arranged in 'core', 'further pure', 'decision' (algorithms), 'statistics', and 'mechanics'. Three A levels total available (six modules each) or fewer and an AS (three). Which ones you want to do are almost entirely up to you if the school's big/lenient enough. IIRC you could even decide for yourself how to allocate the modules' grades across the number of A levels you were eligible for, e.g. if AC would be more beneficial to you than BB.
Presumably there's something you're teaching that we (in the UK) aren't, or more depth somewhere, but I don't know what it is. Our systems are quite different in that mathematics becomes optional after GCSEs (15-16yo) here, but statistics is taught from a far younger age than that, to that, and beyond for those that take A level(s) in mathematics. (As I recall there are six statistics A level modules total, S1-6, I think S1-2 are compulsory for a full A2 (vs. AS) mathematics qualification (which consists of six modules total). In order to do all six statistics modules one would at least take the second A level 'further mathematics', and probably (pun intended; unless statistics was a particular passion and the school allowed it) 'further additional'.
NB I quite liked that structure - there are 18 'modules' total (arranged in 'core', 'further pure', 'decision' (algorithms), 'statistics', and 'mechanics'. Three A levels total available (six modules each) or fewer and an AS (three). Which ones you want to do are almost entirely up to you if the school's big/lenient enough. IIRC you could even decide for yourself how to allocate the modules' grades across the number of A levels you were eligible for, e.g. if AC would be more beneficial to you than BB.