Grahanna publishing produces learning materials for middle school, high school, college, and professional certification courses. because these customers' needs are so diverse, the company established separate divisions for each group. based on this information, grahanna publishing uses departmentalization.

Grahanna publishing uses CUSTOMER departmentalization.
Customer departmentalization involves segregation of customers based on the products which they consumed. Companies which produce different line of products usually use this method to manage their customers. Different departments are formed in the organisation based on the types of customers that buy different products.