Implementation of minimum competency assessment (MCA) containing ethnoscience on the topic of electrolyte and non-electrolyte solutions

This study aimed to implement a Minimum Competency Assessment (MCA) test instruments that meets the criteria of a good and proper test in terms of validity, reliability, level of difficulty, distinguishing power, and that can be used to describe the level of student competence which is then used to develop appropriate, effective, and quality learning strategies. The research method used in this study was the development and validation (D&V) method. The study was conducted on 30 grade XI students at one high school in Bandung, Indonesia. The product resulting from this research was an MCA test instrument consisting of 7 essay questions, 2 short essay questions, 1 matchmaking question, 4 multiple choice questions, and 6 complex multiple-choice questions, which contain local culture or ethnoscience of Indonesian batik crafts, coconut water, and Balinese nira vinegar, on the topic of electrolyte and non-electrolyte solutions. This test instrument was declared valid based on content validity on the CVR value and empirical validity on the Pearson's product-moment correlation coefficient, where 3 questions were valid with very high criteria, 6 valid questions with high criteria, and 11 valid questions with moderate criteria. Reliability analysis reached >0.80 points with very high criteria and reliability. The level of difficulty of the questions was also analyzed, it was found that 16 questions were considered moderate and 4 questions were easy. Additionally, distinguishing level analysis showed that 13 questions were excellent, 4 questions were good, and 3 questions were sufficient.