Assessment can be categorized in many forms, but the broadest category is Formal assessment techniques and Informal assessment techniques. Formal Assessment Techniques can be further sub-divided into a norm-referenced test and criterion-referenced test. Each method has its procedure and techniques, so the advantages and disadvantages also differ from test to test.The formal assessment-Formal Assessment technique test is generally the traditional ways to judge the students. These techniques have data support from which the conclusions are drawn. These tests have standardized measures. These tests have been tried on many students in many parts of the world, now they have enormous data to support the conclusion. Mathematical computation and summarizing methods are implemented in the data. Scores such as percentiles standard scores and percentages are the most common output from this type of assessment. Types of formal assessments are Oral assessment, Homework, Quizzes, and Exit slips.Norm-Referenced Formal Test- It is also known as a normative assessment test; it compares one test-taker to his or her peers. It yields an estimation of the position of the tested individual in a defined set or chosen group concerning the trait being measured.Example-Simple graduation examCriterion-Referenced based test-It is a standards-based assessment, students are assessed with regards to standards. Example-GRE (Graduate Record Exam)