Why were classes in the Chickasaw schools taught in English?

Classes in Chickasaw schools were taught in English primarily due to policies aimed at assimilating Native American students into mainstream American culture. This approach was part of a broader effort by the U.S. government and missionary groups to eradicate indigenous languages and customs, promoting English as the language of education and opportunity. Teaching in English was seen as a means to provide students with better access to resources and social mobility in a predominantly English-speaking society.