Hertfordshire Duncombe School Duncombe School is an independent day school for boys and girls aged 2 to 11. Day Boys Girls Pre-Prep Prep 200 to 400 pupils Contact Details 4 Warren Park Road, Bengeo, Hertfordshire, SG14 3JA www.duncombe-school.co.uk More pre-prep and prep schools in Hertfordshire Beechwood Park Bishop's Stortford College St Columba's College View more Hertfordshire schools.