'Sky high' builds on 'Skyline's' solid foundations and has incorporated feedback from students and teachers. The series includes topics of interest and provides extra opportunities to practice language in use. 'Sky high' begins with a Starter level, which caters specifically for real beginners, and continues with five more levels taking students to a solid upper intermediate level. Special features - The tried and testes Triple A Approach (access-analysis-activation) provide students with powerful support for language development. Grammar builders have practice exercises as well as grammar item. A process writing sequence is now included in every unit of every level, supporting the development of writing as a skill. Workbooks provide learners with extra practice that is closely linked to the content of the Student's Book.