<![CDATA[This study aims to describe the concept of measurement instrument reliability in learning evaluation, including its types, measurement methods, and influencing factors. The research method employed a literature review, analyzing relevant primary and secondary literature from the past ten years. The study's results indicate that reliability is a key aspect determining the consistency and reliability of an instrument, which can be tested through various methods such as test-retest, parallel forms, internal consistency, and split-half tests. Factors influencing reliability include the number of items, clarity of instructions, participant conditions, time of administration, and the appropriateness of the test format. This study confirms that instrument reliability is crucial for ensuring assessment accuracy, supporting validity, and improving the quality of decision-making in learning.]]>
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