This scholarly investigation primarily investigates the essential contribution of teacher leadership in the student academic achievement development in the post-pandemic contexts of higher education. The COVID-19 pandemic has fundamentally altered the usual manner of teaching and learning, thus, pushing teachers to be more democratic, visionary, and technological in their leadership styles. The research is based on Social Cognitive Theory and Transformational Leadership Theory and proposes a new framework that analyzes the impacts of adaptive, transformation, and technological leadership on students' academic achievement. The research significantly highlights the perceived teacher effectiveness as the most critical mediating factor, which, through the application of different leadership practices, leads to the development of academic performance. Delegation of authority to teachers, thus allowing them through adaptive leadership to sort out properly the confusion and whirlwind changes in education theory, transformational leadership which makes students to participate actively and exercising their thinking skills, and technology leadership which adds to the teachers' ability to use a blended learning approach. Connecting these relations again to several issues of view, the proposed framework is a positive input in the discussion on educational leadership in the times of crisis and serves as a theoretical tool for the improvement of students' achievement through the described teacher practices. In addition, the manuscript discusses the repercussions of the findings for the educators, the academic presences, and the policymakers who are putting the emphasis on not solely strengthening teacher leadership but also ensuring academic success in the perpetually evolving higher education setup.