The purpose of large-scale assessments is two-fold: to help the system be accountable (Are we making the best use of our resources?) and to identify trends (Are students learning? What and how well?).To do this, large-scale assessments collect a small amount of information from a large number of students.Classroom assessment, on the other hand, collects a large amount of information from a small number of students.Large-scale assessments are designed to give the system feedback so the system can learn; classroom assessment is designed to give individuals feedback so the individual can learn.Large-scale assessments are designed to assess what students know and can do in relation to what is to be learned, but they do not collect enough information to give a valid picture of what individual students know and can do in a given subject area. more... See more text