We write and organize our books using three key metrics:
Sentence Complexity
Level 1 begins with simple sentences, and by the time students arrive at level 4​​ they will have seen simple, compound, complex, and compound-complex sentences.
Grammatical Sequence
Arranged according to Stephen Krashen's work on sequencing in acquisition, books ​gradually introduce new grammatical schema as students are ready to acquire them.
Functionality of Vocabulary
Books are written with vocabulary that is useful for varying stages of language development and interaction with English speakers; lower levels of books contain more concrete, everyday language, useful at school with friends, and new meetings, while the vocabulary used in upper levels is more abstract and tends toward the more directly related to different contexts.
Helena, Brazilian Student
“I learned a lot of new words. It was good to improve my speech."
