The challenge was to assess the level of competency achievement among SMK students and identify areas for further improvement in both teaching methods and the curriculum. Variability in student performance across competencies required detailed analysis to pinpoint gaps. Source: Data collected from SMK students' competency scores. Size: 254 students, 1,575 records, 9 competencies. Key Variables: Student ID, Competency Name, Competency Score (ranging from 0 to 100).

The Inovatif competency shows the highest variability, with a standard deviation of 14.23, which reflects a wide performance gap and a clear need for targeted support for lower scoring students. Bekerja Sama and Reflektif have the lowest achievement levels at 85.25% and 85.82%, pointing to possible gaps in teaching methods or student understanding. Improvement efforts should include focused support and mentoring for weaker students, a review of learning materials, closer progress monitoring, personalized feedback, and curriculum updates to improve engagement and overall learning outcomes.

Descriptive statistics were applied to understand the overall performance distribution of students across 9 key competencies. Data was categorized based on mean scores, standard deviation, and percentile values to identify competencies requiring attention. Key insights were drawn from competencies with the highest variance and lowest achievement to recommend focused interventions.