2. Problem
Statement In Thailand, learner’s key competencies has recently become an issue of interest for assessment among academicians, and so far very few models of indicators of learner’s key competencies have been developed (educational Testing Bureau, 2012 and Muntana Chukraithai, 2010). To illustrate the development of learners with those acquired 5 key competencies based on the core curriculum, it requires that indicators in each competency be identified. The researcher is therefore interested to develop indicators for assessment of learner’s key competencies following the basic education curriculum for lower secondary school students. The construct validity and factor loading of each indicator will be captured and used for further examination and assessment of learner’s key competencies.