Development and validation of computer subject test for tenth grade Jordanian students, according to the partial credit model

The study aimed at the development and validation of computer subject test for 10th –grade students according to the Rasch partial credit model (PCM) by using the descriptive approach as it is appropriate for the study aims. To achieve the study's objective, the test was constructed of the essay type, and it consisted of 25 items based on the (IRT) according to the Rasch PCM. The first administration of the test was conducted to verify the validity and reliability of the test. To verify the "face validity" of the test's objectives, they were presented to a group of 14 arbitrators who work as teachers and educational supervisors. They found that the contents are representative of the level of the goal, which is pursuing in theory. The empirical reliability was calculated for the test, where the value of person reliability reached 0.91. Moreover, the items reached 0.93. The study population consisted of all 10th-grade students at the schools belonging to the “Directorate of Education of Irbid District,” whose numbers were 7365, represented by 3612 male students, and 3753 female students. According to the class regarding their sex (gender), a sample was chosen according to a cluster as the test unit was the class section. The sample size of the study was 1000 distributed to 490 male students and 510 female students. Besides, this study's findings have brought several issues concerning computer subject (CS) achievement by verifying the tests and reliability and accomplishing the IRT's suppositions according to the PCM