Discussion 2: Blog: Accuracy Standards
A2 Valid Information: According to Yarbrough, Shulha, Hopson, and Caruthers
(2011) state that Validity in its various emphases is an integrating theme
across all the Accuracy Standards. Therefore, valid information refers to the
accuracy of assessment, whether it measures what it is supposed to measure.
There are three ways in which validity can be measured. 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 (Fairbairn,
2009). However, being aware of the basic tenets of validity as you construct
your classroom assessments, and you should be able to help parents interpret
scores for the standardized exams.
A3 Reliable
Information: According to Yarbrough,
Shulha, Hopson, and Caruthers (2011) state that reliability is defined as the
consistency of information and the information that is collected and is crucial
to the justification of validity. Reliability refers to the extent to which
assessments are consistent (Fairbairn, 2009).
For example, having reliable cars that start every time we need it.
Therefore, educators will strive to have reliable, consistent instruments to
measure student achievement (Golafshani, 2003).
According to Golafshani (2003) states that another measure of
reliability is the internal consistency of the items. For example, if you
create a test to measure students’ ability to solve quadratic equations, then
perhaps the student will get it right. Although reliability enemy can be random
error and freedom from the random error, it seems to be equally important for
qualitative and quantitative information summaries (Yarbrough, Shulha, & Hopson,
2011).
Reference:
Fairbairn, S. B. (2009). Inclusive achievement testing
for linguistically and culturally diverse test takers: Essential considerations
for test developers and decision makers. National Council on Measurement in
Education 28 (1), 10-24.
Golafshani, N. (2003). Understanding
Reliability and Validity in Qualitative Research. The Qualitative Report, 8
(4),, pp. 597-606.
Yarbrough, D., Shulha, L., &
Hopson, R. C. (2011). The Program Evaluation Standards. Los Angeles:
Sage.

