Sanskrit...IGCSE...what an amazing option, aravinda!
When I was in secondary school in the UK (Late Quaternary Period), our only GCSE language options were French and German, and taking both was not only rarely ever considered, but looked upon by both students and faculty alike as something subversive, suspicious, and strange.
Back then, German was the new kid on the block and on tentative probation, while French was more firmly entrenched as a compulsory subject which students would take over the next 5 years. Keep in mind, however, that French was brought in earlier to try and comprehensively oust the (previously compulsory) Latin of former grammar school yore (after Oxford and Cambridge no longer required Latin for their entrance exams).
I was lucky to be included in an experimental year that adopted German as a compulsory subject (which they've sadly since dropped altogether), and being a language nerd of "subversive, suspicious, and strange" persuasions, joined a small band of rebellious young reprobates to tack on French in our final year of school as well (because...well...to hell with convention!)
I'm just blown away by the sheer diversity of languages you can study nowadays at GCSE/IGCSE and A Level, which almost (but not quite) makes me want to sit a bunch more!