Harvey Parson (TV: Remembrance of the Daleks, PROSE: Nothing at the End of the Lane) or Parsons (AUDIO: An Unearthly Woman) was the headmaster at Coal Hill School in November 1963 (TV: Remembrance of the Daleks) and, by extension, Ian Chesterton and Barbara Wright's boss. (TV: An Unearthly Child)
He had a great deal of trouble with staffing. For instance, Parson still could not find a replacement for A. Okehurst in the following term. He could not join the other teaching staff, incuding Chesterton, Wright and River Song, at The Red Lion. (AUDIO: An Unearthly Woman)
At some point, the Imperial Daleks took control of him and used him as an undercover agent, implanting a thin device behind his ear. Upon meeting the Seventh Doctor, Parson assumed the Doctor came to apply for the job of school caretaker and wondered if he might not be overqualified, being a doctor.
Parson was terminated by the Imperial Daleks apparently as a security risk, after his failure to apprehend and interrogate Mike Smith regarding the whereabouts of the Renegade Daleks' base, whereupon he collapsed and died. (TV: Remembrance of the Daleks)
Behind the scenes