There are five Subject Groups in IGCSE with several subjects to choose from:

Group 1:  Languages (First Language, Second Language, Foreign Language, etc)

Group 2:  Humanities and Social Sciences (Geography, English Literature, History, etc)

Group 3:  Sciences (Biology, Chemistry, Physics, etc)

Group 4:  Mathematics (Mathematics, Additional Mathematics, etc)

Group 5:  Creative, Technical and Vocational (Accounting, Business Studies, Computer Studies, Music, etc)