Standardization is defined as the process by which test constructors ensure that testing procedures, instructions, and scoring are identical, or as nearly identical as possible, on every testing occasion. Standardizing a test is a very important process of administering the test to a representative sample of future test-takers in order to establish a basis for meaningful comparisons of scores. With that being said, reliability is the consistence or repeatability of a measure instrument. To establish reliability, researchers compare the consistency of test-takers’ scores on two halves of the test, alternate forms of the test, or retests on the same test. There are two types of reliability. Inter-Rater Reliability and Test-retest. Test-retest reliability is when the tester test the same people at different times but the participants should get the same results that he or she received on the previous test. The next reliability is Inter-rater and that is when multiple people are giving assessments of some kind or are the subjects of some test, then similar people should lead to the same resulting scores. It can be used to calibrate people, for example those being used as observers in an experiment. On the other hand, validity is the accuracy which a measuring instrument assesses the attribute that is designed to measure correlated with measures of school performance. In other words, validity refers to how well a test measures what it is purported to…