Prisma is a structured course of Spanish for general use, following the levels of the Common European Framework of Reference for Languages (A1, A2, B1 etc). It consists of five levels (A1-C1). Each level consists of the student book (with or without audio CD), Student Exercises Book, Set of audio CDs and the Teacher Guide. The digital CD-Rom for each level is also available specailly for teachers and for class-room projections. Each set of two levels is also available as Prisma Fusion, which contains most of the material of Prisma.