Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Warminster School -  Warminster School originally called Lord Weymouth's Grammar School is a co-educational independent day and boarding school at Warminster Wiltshire for students aged three to eighteen. It now comprises the Preparatory School for pupils aged three to eleven and the Senior School for students aged eleven to eighteenThe school's buildings lie in grounds which face open country on the edge of the Warminster town centre.
A:
Educational Institution