The book from which the people of Corn Island learned the English langauge

Before 1945, education in the Corn Islands was entirely in standard English. Education was first introduced on the islands in 1852, when Reverend Edward Kelly, from British Honduras, founded the Ebenezer Baptist Church and School. 

The book that was used in classrooms was The Royal Reader. Students would learn to read and write through different stories, poems, and illustrations in addition to responding to questions and exercises from each edition of the book. 

There were eight series of books, in order: The Infant Reader, The Royal School Primer, and six numbers of The Royal Readers. Together they covered the subjects of reading and spelling from the beginning of school to the end. 

The Royal Readers, which was a British publication, was also used in many households and schools to teach children, not only on the Corn Islands —which were part of the Mosquitia— but in other overseas territories of British influence like Jamaica, Belize, Cayman Islands, among others. There were also other books, but Royal Reader was the most popular one. 

Spanish was formally introduced on the islands after 1945 and with the first public school built in 1950, the language was reinforced in classrooms, becoming the mandate language in the curriculum after the 1980s and subsequently replacing an entire English education system.