The purposes of this research are: (1) develop tools to innovate the learning environments of initial primary school teachers to grow as continuous learners, (2) examine their effectiveness to clarify the ways of initial teacher training. There are still many problems remaining e.g. the ability difference between mentors; connection of teacher trainings at on-site and out-side schools; learning environments for initial teachers. In response, we designed a standard of teaching competencies consists of eight categories and developed some tools accordingly: two handbooks for initial teachers and mentors; a teaching competencies rubric. We distributed these tools to all initial teachers and their mentors in Hiroshima prefecture to try them. Then we examined their effectiveness, possible uses, and development potential through a questionnaire survey targeting at only those who provided their consent its concept and method. The data from free descriptions was analyzed and considered by applying subject classification which is one of the text-mining approaches. As a result, we could extract their usage based on each teacher’s practice task and experience, effectiveness, and improvement potential. Our findings are beneficial as a fundamental material to consider about an effective support for initial teachers and their required competencies in contemporary world.