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Lawrence J. Maheady and Angela L. Patti

Teacher preparation programs are undergoing a shift from knowledge-based to practice-based, meaning the emphasis is on what teacher candidates can do, rather than what they know. In light of this movement, high leverage practices (HLPs)—a set of core practices that educational experts agree all teachers should be able to do upon entering the teaching field—have been developed in several different educational areas (e.g., general education and special education). As experts develop sets of HLPs, they identify practices that (a) are researched based, (b) are often used by teachers during the school day, (c) can be applied across grade levels and subject areas, (d) are fundamental to student learning, and (e) can be taught, practiced, and developed to some degree of fluency by teachers entering the profession. The idea is that these practices can be used as a core curriculum for teacher preparation programs. While initial work with HLPs is promising, additional questions must be answered before moving forward. Institutions of higher education that choose to use HLPs to frame their teacher preparation programs need to determine (a) which HLPs to use, (b) how to integrate HLPs into the program, (c) how to assess teacher candidate fluency with HLPs, and (d) how to evaluate the effects of HLPs on P–12 students. As these questions are answered, further light can be shed on what truly makes a practice worthy of the designation “high leverage.”


In Japan, various styles of Lesson Study (LS) have been born over 140 years. The first issue is what should be the focus of observation in the live lesson. There are two trends with regard to the target of observation. One is teacher- and lesson-plan-centered observation since the Meiji era (1870s), and the other is child-centered observation since the Taisho era (1910s). The former is closely related to administrative-led teacher training. The latter is more complex and can be further divided into five types. The second issue is which activities are given priority in the LS processes: observation of the live lesson itself, preparation before the lesson, or reflection after the lesson. Furthermore, each activity can be designed as a personal or a collaborative process. Thus, there are roughly six types of LS in Japan related to this issue. Which type is adopted depends on the period, lesson-study frequency, and school type. In addition, it is noteworthy that the type of LS implemented is closely related to which of demonstration teacher or observers are regarded as the central learners. The third issue is whether to regard LS as scientific research or as literary research. Teachers and researchers in 1960s Japan had strong interest in making lessons and lesson studies more scientific. On the other hand, as teachers attempt to become more scientific, they cannot but deny their daily practice: making improvised decisions on complicated situations without objective evidence. Although lesson studies have been revised in various forms and permutations over the last 140, formalization and ceremonialization of lesson studies has become such that many find lesson studies increasingly meaningless and burdensome. What has become clear through the discussions on the three issues, the factors that impede teacher learning in LS are summarized in the following four points; the bureaucracy controlled technical expert model, exclusion of things that are not considered scientific, the view of the individualistic learning model, and the school culture of totalitarian products. To overcome obstruction of teachers’ education in LS and the school crisis around the 1980s, the “innovative LS Cases” has begun in the 1990s. The innovative LS aims not for as many teachers as possible but for every teacher to learn at high quality. In the innovative LS Case, what teachers are trying to learn through methods of new LS is more important than methods of new LS itself. Although paradoxical, in order to assist every single teacher to engage in high quality learning inside school, LS is inadequate. It is essential that LS address not only how to actualize every single teacher to learn with high quality in LS but also through LS how to improve collegiality which enhances daily informal collaborative learning in teachers room. Furthermore, LS cannot be established as LS alone, and the school reform for designing a professional learning community is indispensable. Finally, the concept of “the lesson study of lesson study (LSLS)” for sustainable teacher professional development is proposed through organizing another professional learning communities among managers and researchers.


The 21st-century explosion and decisive impact of digital media on education has highlighted the need for rethinking the required teacher knowledge for guiding students in taking advantage of improved technological affordances. The reformed teacher knowledge, called technological pedagogical content knowledge (TPCK or TPACK), is knowledge reflecting a dynamic equilibrium for the interaction of technology, pedagogy, and content. The intersection of these three knowledge domains reveals four additional subsets: technological pedagogical knowledge, technological content knowledge, pedagogical content knowledge and technological pedagogical content knowledge. The summation of these domains resides within the intellectual, social, and cultural contexts of education, to reveal the knowledge known as TPCK/TPACK. Teacher educators, researchers, and scholars have been and continue to be challenged with identifying appropriate experiences and programs for assessing and developing this teacher knowledge for integrating digital technologies as learning tools in reformed educational environments. Two questions guide this review of the literature surrounding the active, international scholarship and research toward understanding the nature of TPCK/TPACK and guiding the development of teachers’ TPCK/TPACK. The response to the first question describes the nature of this teacher knowledge for the digital age and how it differs from prior descriptions of teachers’ knowledge. The response to the second question explores the research and scholarship unveiling how this knowledge is developed and assessed at the pre-service and in-service teacher levels. From this scholarly work, three distinct views on the nature of TPCK/TPACK are proposed to explain various approaches in how this teacher knowledge is both developed and assessed in pre-service and in-service preparation programs. The integrated, heterogeneous vision recognizes the distinctness of the multiple subsets in the model and calls for specific preparation in each of the domains as key to developing the teacher knowledge for the digital age. The transformative, homogeneous vision considers the knowledge as a whole, composed through the integration of the multiple subset. Through the educational processes, the multiple subsets are rearranged, merged, organized, integrated and assimilated in such a way that none are any longer individually discernible. The third vision, called the distinctive vision, acknowledges the critical nature of the primary domains of pedagogy, content and technology and proposes the value of preparing teachers in each of these distinct domains. Supporting teachers for gaining the TPCK/TPACK-based knowledge, the preparation must respond to changes in content knowledge, pedagogical knowledge, and technological knowledge. These cumulative scholarly efforts provide a launchpad for future research focused on developing teachers’ knowledge for teaching in the digital age.