Standardized tests with major inconsistencies in test performance are not considered reliable measurements. The term "validity" in standardized testing refers to students actually taking the test. A standardized test could be reliable in construction, but is not standard if there are discrepancies in taking the test. For a test to be valid, the instructions must be followed exactly. For example, if the instructions state the test should be administered in a two-hour block, a proctor who arbitrarily gave test-takers three hours would invalidate the test.
Also, the conditions for the test should be similar to those for the sample norm group. If an air conditioner broke down and students took the test in a degree-temperature classroom, the validity of the test would be questionable. Vickie Christensen has been a freelance writer since She has written feature articles for "River City Weekly," explanatory articles for Wise Geek and travel and literary articles for various other websites.
While there is a great deal of debate about the accuracy and utility of college-admissions tests, and many institutions of higher education no longer require applicants to take them, the tests are used as indicators of intellectual and academic potential, and some may consider them predictive of how well an applicant will do in postsecondary program. International-comparison tests are administered periodically to representative samples of students in a number of countries, including the United States, for the purposes of monitoring achievement trends in individual countries and comparing educational performance across countries.
Trained professionals, such as school psychologists, typically administer the tests, which may require students to perform a series of tasks or solve a set of problems. Psychological tests are often used to identify students with learning disabilities or other special needs that would qualify them for specialized services.
Reform Following a wide variety of state and federal laws, policies, and regulations aimed at improving school and teacher performance, standardized achievement tests have become an increasingly prominent part of public schooling in the United States. When focused on reforming schools and improving student achievement, standardized tests are used in a few primary ways: To hold schools and educators accountable for educational results and student performance.
In this case, test scores are used as a measure of effectiveness, and low scores may trigger a variety of consequences for schools and teachers. For a more detailed discussion see high-stakes test. To evaluate whether students have learned what they are expected to learn , such as whether they have met state learning standards.
In this case, test scores are seen as a representative indicator of student achievement. To identify gaps in student learning and academic progress. In this case, test scores may be used, along with other information about students, to diagnose learning needs so that educators can provide appropriate services, instruction, or academic support. Others believe that standardized testing provides skewed, inaccurate results.
There are many pros and cons of standardized testing. It is used to determine current averages and identify high and low performers so that each student can be treated accordingly. All test takers answer the same questions and are scored the same way. This makes it possible to compare individual students based on their performance.
The testing sample can be as small as a classroom or as broad as the entire country. A coefficient of 0 means no reliability and 1. Since all tests have some error, reliability coefficients never reach 1. Generally, if the reliability of a standardized test is above. Validity refers to the accuracy of an assessment -- whether or not it measures what it is supposed to measure.
Even if a test is reliable, it may not provide a valid measure. The reliability consistency of this scale is very good, but it is not accurate valid because you actually weigh pounds perhaps you re-set the scale in a weak moment!
Since teachers, parents, and school districts make decisions about students based on assessments such as grades, promotions, and graduation , the validity inferred from the assessments is essential -- even more crucial than the reliability.
Also, if a test is valid, it is almost always reliable. There are three ways in which validity can be measured. In order to have confidence that a test is valid and therefore the inferences we make based on the test scores are valid , all three kinds of validity evidence should be considered. So, does all this talk about validity and reliability mean you need to conduct statistical analyses on your classroom quizzes?
No, it doesn't.
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