Measurement, Evaluation, Assessment, and Tests

Editor's Notes

• #3: What Do We Mean by Testing, Assessment, and Evaluation?When defined within an educational setting, assessment, evaluation, and testing are all used to measure how much of the assigned materials students are mastering, how well the students are learning the and/or from/using the materials, and how well they are meeting the stated goals and objectives. Although you may believe that assessments only provide instructors with information on which to base a score or grade, assessments also help you to assess your own learning.Education professionals make distinctions between assessment, evaluation, and testing. However, for the purposes of this tutorial, all you really need to understand is that these are three different terms for referring to the process of figuring out how much you know about a given topic and that each term has a different meaning. To simplify things, we will use the term "assessment" throughout this tutorial to refer to this process of measuring what you know and have learned.A test or quiz is used to examine someone's knowledge of something to determine what he or she knows or has learned. Testing measures the level of skill or knowledge that has been reached.Evaluation is the process of making judgments based on criteria and evidence.Assessment is the process of documenting knowledge, skills, attitudes and beliefs, usually in measurable terms. The goal of assessment is to make improvements, as opposed to simply being judged. In an educational context, assessment is the process of describing, collecting, recording, scoring, and interpreting information about learning.
• #4: Measurement refers to the process by which the attributes or dimensions of some physical object are determined. One exception seems to be in the use of the word measure in determining the IQ of a person. The phrase, "this test measures IQ" is commonly used. Measuring such things as attitudes or preferences also applies. However, when we measure, we generally use some standard instrument to determine how big, tall, heavy, voluminous, hot, cold, fast, or straight something actually is. Standard instruments refer to physical devices such as rulers, scales, thermometers, pressure gauges, etc. We measure to obtain information about what is. Such information may or may not be useful, depending on the accuracy of the instruments we use, and our skill at using them. There are few such instruments in the social sciences that approach the validity and reliability of say a 12" ruler. We measure how big a classroom is in terms of square feet, we measure the temperature of the room by using a thermometer, and we use an Ohm meter to determine the voltage, amperage, and resistance in a circuit. In all of these examples, we are not assessing anything; we are simply collecting information relative to some established rule or standard. Assessment is therefore quite different from measurement, and has uses that suggest very different purposes. When used in a learning objective, the definition provided on the ADPRIMA for the behavioral verb measure is: To apply a standard scale or measuring device to an object, series of objects, events, or conditions, according to practices accepted by those who are skilled in the use of the device or scale. An important point in the definition is that the person be skilled in the use of the device or scale. For example, a person who has in his or her possession a working Ohm meter, but does not know how to use it properly, could apply it to an electrical circuit but the obtained results would mean little or nothing in terms of useful information.
• #5: Evaluation is perhaps the most complex and least understood of the terms. Inherent in the idea of evaluation is "value." When we evaluate, what we are doing is engaging in some process that is designed to provide information that will help us make a judgment about a given situation. Generally, any evaluation process requires information about the situation in question. A situation is an umbrella term that takes into account such ideas as objectives, goals, standards, procedures, and so on. When we evaluate, we are saying that the process will yield information regarding the worthiness, appropriateness, goodness, validity, legality, etc., of something for which a reliable measurement or assessment has been made. For example, I often ask my students if they wanted to determine the temperature of the classroom they would need to get a thermometer and take several readings at different spots, and perhaps average the readings. That is simple measuring. The average temperature tells us nothing about whether or not it is appropriate for learning. In order to do that, students would have to be polled in some reliable and valid way. That polling process is what evaluation is all about. A classroom average temperature of 75 degrees is simply information. It is the context of the temperature for a particular purpose that provides the criteria for evaluation. A temperature of 75 degrees may not be very good for some students, while for others, it is ideal for learning. We evaluate every day. Teachers, in particular, are constantly evaluating students, and such evaluations are usually done in the context of comparisons between what was intended (learning, progress, behavior) and what was obtained. When used in a learning objective, the definition provided on the ADPRIMA site for the behavioral verb evaluate is: To classify objects, situations, people, conditions, etc., according to defined criteria of quality. Indication of quality must be given in the defined criteria of each class category. Evaluation differs from general classification only in this respect.
• #6: Assessment is a process by which information is obtained relative to some known objective or goal. Assessment is a broad term that includes testing. A test is a special form of assessment. Tests are assessments made under contrived circumstances especially so that they may be administered. In other words, all tests are assessments, but not all assessments are tests. We test at the end of a lesson or unit. We assess progress at the end of a school year through testing, and we assess verbal and quantitative skills through such instruments as the SAT and GRE. Whether implicit or explicit, assessment is most usefully connected to some goal or objective for which the assessment is designed. A test or assessment yields information relative to an objective or goal. In that sense, we test or assess to determine whether or not an objective or goal has been obtained. Assessment of skill attainment is rather straightforward. Either the skill exists at some acceptable level or it doesn’t. Skills are readily demonstrable. Assessment of understanding is much more difficult and complex. Skills can be practiced; understandings cannot. We can assess a person’s knowledge in a variety of ways, but there is always a leap, an inference that we make about what a person does in relation to what it signifies about what he knows. In the section on this site on behavioral verbs, to assess means To stipulate the conditions by which the behavior specified in an objective may be ascertained. Such stipulations are usually in the form of written descriptions.
• #7: A test is a special form of assessment. Tests are assessments made under contrived circumstances especially so that they may be administered. In other words, all tests are assessments, but not all assessments are tests. We test at the end of a lesson or unit. We assess progress at the end of a school year through testing, and we assess verbal and quantitative skills through such instruments as the SAT and GRE
• #8: Why is Assessment Important?Hopefully by this point in your life you have discovered that learning can be fun! You have probably also realized that you are constantly learning, whether you are in a classroom, a car, or a kitchen.Assessment helps you build confidence in your ability to learn.Perhaps you have heard that the global work culture is changing. Unlike your grandfather, you will probably have a number of different jobs and careers during your lifetime. In order to be successful, you will need to have confidence in your ability to learn and you will need to become a lifelong learner. Assessment plays a key role in developing your confidence in your ability to learn, as well as in developing your lifelong learning skills.
• #9: You may be thinking that learning to bake cookies and learning something like chemistry aren't the same at all, and, in a way, you are right. But, the information you get from assessing what you have learned is the same. Brian used what he learned from each batch of cookies to improve the next batch. You learn from every homework assignment you complete and every quiz you take what you still need to study in order to know the material.Another really good way to understand the importance of assessment is to think about learning skills. When playing basketball, for example, you get immediate feedback about how well you are doing, and this tells you how to adjust to get the ball in the hoop next time. When you are learning a skill, feedback (assessment) is automatic. When you are learning chemistry, the feedback process needs to be made visible through assessment.Assessment doesn't have to be a written exam. You can determine if you have successfully learned something in a number of different ways, depending on what you are trying to learn. Recognizing that there are many different ways to assess learning and becoming skillful at self-assessment are important lifelong learning skills.