CCxLAB: A Classroom – Based Customized Experiential Lab in a Box for Retooling PCSHS Science Teachers

This study addresses persistent challenges in science education among PCSHS students in STEM, other academic tracks, and Junior High School within the K–12 program, particularly in light of the Philippines’ at-risk performance in the 2018 and 2022 PISA assessments.The research implemented CCxLAB, an innovative classroom-based customized experiential laboratory box, in Research and Physical Science subjects. A total of 209 participants (149 STEM, 39 HUMSS, and 21 Junior High School students) engaged in laboratory activities. Data were collected through pre- and post-tests, the adapted Laboratory Performance Assessment Tool (Slater & Ryan, 1993), and teachers’ reflective journals. Findings revealed significant mean differences in pre- and post-test scores across small and large groups. Students achieved performance levels ranging from meeting (2 points) to exceeding goals (3 points). Teachers reported CCxLAB’s effectiveness in instructional and technical design, usability, and frequency. Statistical analysis confirmed the effectiveness of CCxLAB at the 5% significance level. The tool provides valuable insights for improving science instruction, enhancing literacy, and strengthening practical applications in the Philippine K–12 curriculum.