Singleton himself says he remembers the young Middleton studying away in preparation for her General Certificate of Secondary Education (GSCE) at Marlborough College.

FORBES: Kate Middleton's Childhood Home Up For Grabs

If the students wish to pursue a certificate to confirm that they have achieved the official level of primary or basic education (three years of secondary school), they are able to sit an exam to obtain this qualification whilst attending the programme.

UNESCO: Country Profile: Uruguay