Portfolios may include projects or other examples of written language work, computer diskettes (with some work or drawings completed inside or outside the class), video cassettes (with your favourite story or with performances of songs, school plays, etc), CDs (with songs performed by pupils, etc), certificates, reports from the teachers, or even a collection of objects or pictures. It is a collection of what pupils want to keep as evidence of what they are learning through the medium of the English language, with subtle guidance from the teacher. The main emphasis is on the process of learning.