Abstract: Biology is one of the core subjects in the K to 12 Curriculum. This study endeavored to assess the use of Strategic Intervention Material as a tool in remediating Grade 7 Biology least learned competencies in San Felipe Integrated School. It also sought to find out the least learned competencies based from the second quarter test result in biology class and describe the extent of the mastery of 75 respondents after the use of SIM as an intervention.