MUST: Journal of Mathematics Education, Science and Technology
Vol 11 No 1 (2026): JULI

Deconstructing Lecturer Performance Patterns Based on Longitudinal Data: An Educational Data Mining Approach Using K-Means Clustering`

Basrul Basrul (UIN Sultanah Nahrasiyah Lhokseumawe)
Samsul Bahri (UIN Sultanah Nahrasiyah Lhokseumawe)
Alim Misbullah (UIN Sultanah Nahrasiyah Lhokseumawe)



Article Info

Publish Date
11 Jul 2026

Abstract

Lecturer performance evaluation (EDOM) in higher education is often reduced to a single average score that fails to capture the heterogeneity of teaching competency profiles. This study deconstructs lecturer performance patterns through an Educational Data Mining (EDM) approach to overcome the "Data Rich, Information Poor" phenomenon. Using an eight-semester longitudinal database (2021–2024) covering a population of 493 lecturers and 5,577 evaluation records at UIN Sultanah Nahrasiyah, an adaptive scale-harmonization procedure was applied to equate evaluation instruments that differed across years. Empirical validation using the Elbow Method identified three distinct performance typologies: an Excellence cluster (32.8%; IKD 3.97, minimal load), a High Productivity cluster (36.1%; extreme load of 23.69 classes, moderate performance), and an Underperformance cluster (31.1%; fundamental competency constraints despite a low workload). Pearson and Spearman correlation tests confirmed no significant linear relationship between teaching load and IKD (p > 0.05), reinforcing the non-linear nature of the relationship. These findings confirm the existence of a Productivity Paradox in higher education and recommend a shift from uniform HR development policies toward a data-cluster-based differentiation strategy.

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Journal Info

Abbrev

matematika

Publisher

Subject

Computer Science & IT Education Mathematics

Description

MUST is a journal of mathematics education, science, and technology published by the Faculty of Teacher Training and Education, Muhammadiyah University of Surabaya. This journal focuses on the publication of research results and scientific articles on mathematics education, science, and technology. ...