This study examines the effectiveness of research-based instructional strategies, professional competence, and pedagogical approaches among elementary teachers in the Schools Division of Iloilo, Philippines, during the 2023-2024 school year. The research employs a descriptive-correlational design to explore the relationships between these variables, with a focus on how teachers’ demographic profiles—such as age, sex, educational attainment, length of service, and position—influence their instructional methods and professional effectiveness. A total of 391 elementary teachers participated in the study, representing a diverse cross-section of the teaching workforce in Iloilo. The study utilized a validated and reliable questionnaire to gather data, which was then analyzed using various statistical tools, including frequency counts, percentages, means, T-tests, ANOVA, and Pearson correlation. The findings reveal that while there is a general uniformity in pedagogical approaches across different age groups, sexes, and levels of teaching experience, significant differences emerge when these approaches are classified by educational attainment and professional position. Younger teachers and those with less experience tend to prioritize active learning strategies and inquiry-based learning, while more experienced teachers and those in higher positions emphasize collaboration, continuous improvement, and differentiation in their teaching methods. The study also identifies a positive correlation between the use of research-based instructional strategies and professional competence, suggesting that teachers who engage with research tend to be more effective in their roles. However, the findings indicate that tailored professional development programs are necessary to address the specific needs and strengths of different teacher groups, particularly concerning their educational background and professional roles. Overall, this research contributes to the ongoing efforts to enhance the quality of education in the Philippines by providing insights into how teachers’ instructional strategies and professional competencies can be improved to better meet the diverse needs of their students. The study’s recommendations focus on fostering collaboration, promoting continuous professional development, and ensuring that teaching practices remain relevant and effective in an ever-evolving educational landscape. Keywords: research-based instructional strategies, professional competence, pedagogical approaches, elementary education, teacher development, educational attainment, teaching experience, classroom practices, student engagement, Philippines education system
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