Botswana Guardian

National Assessment­s Part 3: Preparatio­ns for National Assessment Implementa­tion

- The Author holds Ph. D. in ‘ Assessment & Quality Assurance’ and writes in his personal capacity as a Psychometr­ic Researcher. Contact/ WhatsApp: 71713446 or masoletm@gmail.com or Facebook page: Trust Mbako Masole

Conducting a national assessment is a massive task involving a number of activities. It requires a dedicated research team that is well- coordinate­d to successful­ly implement it.

The national assessment is by nature not cheap hence the exercise should not be undertaken unless all those concerned agree its results are likely to have an impact on policy making. Thus, a strong government commitment to its implementa­tion is required from the outset.

Failure to do that may result in a lot of useless informatio­n being collected at a high opportunit­y cost. The purpose of the national assessment will determine how the results will be reported and used. Therefore, the purpose and intended uses of assessment results are central in making decisions about a number of activities.

The subsequent decision to be made is what informatio­n is to be collected at what level of education. When conducting the survey for the first time, the number of subjects to be included needs to be few. Once establishe­d, informatio­n collected may encompass other aspects of the education system.

All learners at the selected level form what is called the population. But due to costs and logistical issues, it is advisable to just involve a certain percentage of learners from the targeted population. The best and most cost- effective practice is to take a representa­tive sample from the population.

It is important that every learner from the targeted population, irrespecti­ve of their ability, background, ethnicity, or gender, stands an equal chance of being included in the sample. That is, there shouldn’t be any deliberate effort to exclude a certain group of learners from participat­ing in the survey.

There are a number of techniques employed to achieve a representa­tive sample. However, we won’t go into those technicali­ties. In as much as the examinatio­n test is a representa­tive sample of the subject content material that has been learned, learners do not write everything that they learned in the past two or three years of the programme.

Otherwise, if all the content domain was to be included in the tests, the examinatio­n for just one subject would take quite some time. That is why it is extremely important to include continuous assessment marks in the determinat­ion of learners’ final grades.

This enhances validity – that is the representa­tiveness of the subject content matter in the assessment process.

Just like in the examinatio­ns, tests administer­ed in the national assessment could be paper- and- pencil tests, particular­ly selected response items such as multiple choice, matching, or true/ false items. They could also be constructe­d response items and performanc­e items. Constructe­d- response items require learners to create their own responses or products rather than choose a response from an enumerated set. Examples include short- answer items and exercises.

On the other hand, performanc­e items include a wide range of assessment tasks that are product- or process- based, designed to emulate real- life contexts or conditions in which specific knowledge or skills are actually applied. Examples include conducting a laboratory experiment or playing a musical compositio­n, and portfolios showing samples of work over time.

Each of these test formats assesses different knowledge and skill set, as such they are all important to be included in the national assessment tests. However, deciding on the type of format and how much of each to include is largely dependent on the purpose and intended uses of the test, the amount of time available for testing, the amount of time available for scoring and report preparatio­n, and finally the cost implicatio­ns.

Developing test items that will be able to give accurate informatio­n about the state of education is not an easy task. The tests must be reliable, fair, free from bias, and valid for their intended uses. To ensure this, the developmen­t should include a number of stakeholde­rs, and the tests then piloted and field tested. Piloting is done with a smaller sample to check whether items are working as originally intended and refine procedures. Field testing on the other hand is administer­ing the camera- ready tests to a much bigger sample more or less in a real- world environmen­t to check for practicabi­lity. After field testing, the items should not change much from the original, or else it would mean the initial developmen­t was of low quality. In addition to administer­ing standardis­ed tests, questionna­ires are also administer­ed to learners, parents, teachers, and school administra­tion to collect background informatio­n about the learning environmen­t to help explain learners’ achievemen­t and how best they can be helped to attain more.

Yes, it’s possible!

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