Kind teacher, your perfect educator initially (4)
I believe the answer is:
type
'kind' is the definition.
(type is a kind of kind)
'teacher your perfect educator initially' is the wordplay.
'initially' suggests taking the first letters.
The first letters of 'teacher your perfect educator' is 'TYPE'.
(Other definitions for type that I've seen before include "Use a keyboard; sort" , "Figure" , "Kind - kind of writing" , "Category, sort" , "Class, kind or printed characters" .)