The Observable Language and Literacy Behaviours (OLLB) continua describe the English proficiency of ELL who have limited or interrupted formal schooling and require an English literacy development program. The continua describe English language and literacy proficiency development in three broad strands-oral, reading, and writing. Each strand is guided by the Ontario language curriculum and the ELD curriculum. The Oral strand is defined in terms of listening and speaking skills. Reading is organized by the elements: meaning, form and style, and fluency. The Writing strand emphasizes the view of writing as a process, progressing from prewriting and organization of ideas, to writing and editing. The Observable Language and Literacy Behaviours continua have two main purposes: one is to inform programming and the other is to track the student's language proficiency.