Journal of Educational Measurement, Evaluation and Research

ABSTRACT

Standardized assessment tools play a crucial role in ensuring objectivity, reliability, and validity in evaluating student performance at the secondary education level. This study focuses on the systematic development and validation of a standardized assessment instrument designed to measure cognitive achievement in secondary school students. The research adopts a mixed-method approach, combining qualitative item construction with quantitative psychometric validation techniques. Key stages include blueprint design, item writing, pilot testing, reliability estimation, and validity assessment using statistical methods such as Cronbach’s alpha and factor analysis. The findings indicate that the developed tool demonstrates high reliability and strong construct validity, making it suitable for large-scale academic evaluation. The study contributes to improving assessment practices and supports evidence-based educational decision-making.

KEYWORDS: Standardized Assessment, Secondary Education, Reliability, Validity, Psychometrics, Educational Measurement