As technology continues to progress, different institution including schools, make use of its advantages. For this reason, technology leadership is a must in addition to different leadership styles adapted by the school heads. This study was designed to investigate the relationship of technology leadership techniques and competencies to teaching effectiveness. This study on the relationship of technology leadership techniques and competencies of the school head and the teaching effectiveness of the teachers used descriptive correlational research design. It quantitatively measured the level of technology leadership techniques as to modeling and guidance, supply and support, evaluation and research, diffusion of innovation and communication and inspiration, and competencies as to visionary leadership and management, digital citizenship, systematic improvement, instructional expertise and problem solving ability of their respective school heads, and the effect of technology leadership to teaching effectiveness as to technical proficiency, competence, compassion and empathy, subject expertise, time management and students engagement. The study revealed that technology leadership techniques and competencies have moderate to strong correlation to teaching effectiveness. The study also showed that educational leaders must embrace technological leadership to manage digital complexity, stimulate pedagogical innovation, and prepare students for 21st-century challenges.  The result can be utilized to upscale technology leadership in broader scope and consequently, improve teaching effectiveness and students achievement.