High performance in high-stakes examinations is commonly assumed to reflect deep understanding of scientific concepts. However, research in science education increasingly questions this assumption, particularly in educational systems where assessment strongly emphasizes procedural competence and recall. The present study investigates the conceptual understanding of honors high school graduates who achieved top scores in the Greek Panhellenic examinations and were admitted to highly selective university departments, specifically medical school. Using diagnostic questionnaires grounded in everyday contexts, we examined students’ alternative conceptions in three core scientific domains: physics, chemistry, and biology. Participants were first-year medical students whose responses were analyzed in relation to examination performance, self-reported interest in science subjects, and gender. Across all domains, results revealed a substantial prevalence of misconceptions that closely resemble those documented in younger and less academically successful student populations. Importantly, these alternative conceptions showed no significant association with Panhellenic examination grades, gender, or reported interest in the respective science subjects. The findings indicate a clear dissociation between examination success and conceptual understanding, suggesting that high achievement within the Greek educational system primarily reflects adaptation to assessment demands rather than meaningful learning and conceptual change. These results highlight systemic limitations of assessment-driven instruction and call for a reconsideration of how scientific understanding is taught and evaluated. Emphasizing conceptual reasoning, explanatory coherence, and formative assessment may be essential for aligning academic achievement with genuine scientific understanding.
Konstantinos T. Kotsis (Wed,) studied this question.