sentences:  R. Neville Tate was Headmaster of Yarm School until 1999 when David Dunn was newly appointed.Following 20 years in charge of this North East independent school, David Dunn stepped down in 2019 and Dr Huw Williams took on the position.The School now welcomes over 1,100 pupils between the ages of 3 and 18 and employs some 240 individuals.