Authors:

Kingshuk Karan, Sujit Pal, Abhijit Guha

Abstract:

This study presents the procedure for developing and validating a science achievement test for 9th grade students to assess their academic achievement in the science group. It is a multiple-choice questionnaire with four options and 30 items. Items are selected in the areas of knowledge, understanding, application, and skill domains in Bloom’s taxonomy. In order to analyse the items, a pilot study with 50 items was applied to 130 randomly selected learners. Item analysis was carried out by computing the discrimination index and difficulty value of the test items. Items with discrimination index of 0.2 or above and difficulty value of 30 to 80 were selected for the final instrument. After item analysis, the 50 items of the test were reduced to 30. The content validity and face validity of the tool were judged by experts. Reliability is ensured by the split-half method and the KR20 method, and these values are 0.84 and 0.87, respectively. Hence, the tool has an optimum level of validity and reliability to measure the science achievement of learners.

Keywords:

Science achievement test, validity, reliability

Vol & Issue:

VOL.16, ISSUE No.1, March 2024