The series is specially designed for students from intermediate to proficiency level. Each book consists of five modules and provides systematic preparation in all four language skills - listening, speaking, reading and writing - required at these levels. The Student´s Book and the Workbook are designed to be covered in approximately 100 to 120 hours of classroom work.

The Workbooks for Upstream Intermediate to Proficiency each comprise ten themed units with a variety of realistic and challenging tasks and exercises divided into clear sections for Vocabulary, Grammar, Listening & Speaking and Writing as well as tapescripts of all the Listening exercises.

The Workbook for Upstream Intermediate consists of two parts. Part A contains Vocabulary, Grammar, Communication, Reading, Listening and Writing sections with a variety of motivating tasks and useful exercises. Part B is a complete grammar supplement, containing a clear presentation of theory and systematic practice of the grammar dealt within the course.

The Test Booklets contain photocopiable assessment tests as well as a mid-year and exit test allowing teachers to assess students´ progress throughout the course.