From the course introduction:
This text was prepared for use in the Foreign Service Institute programs of instruction. Instruction in modern written Arabic is planned in three stages: (1) prepared materials allow the student to gain recognitional mastery of a basic vocabulary and of basic morphological and syntactic patterns; (2) students read unprepared materials such as newspapers; and (3) the use of anthologies, books, and periodicals is recommended. Each of the 32 lessons of this volume is divided into sections on basic sentences, supplementary sentences, drills, notes, and vocabulary. Prior to beginning this volume, the student is expected to have learned the Arabic writing system and have a reasonably accurate pronunciation.

FSI