educationalist
noun /ˌedʒuˈkeɪʃənəlɪst/
  /ˌedʒuˈkeɪʃənəlɪst/
(also educationist 
 /ˌedʒuˈkeɪʃənɪst/
  /ˌedʒuˈkeɪʃənɪst/
)- a specialist in theories and methods of teaching
- She was perhaps the most significant educationalist of the 20th century.
 - Some leading educationalists have been cautious about this theory.