EFL Learners’ Strategic Investment in coping with Classroom learning barrier: Does Self-Efficacy matter? Nasmilah Sarniati Nuru Abstract This study investigates the ability of EFL learners in using strategic language competence for making certain decisions on how to say or write or interpret language, and making repairs on blocked communication in classroom. The interactive activities with teachers and other learners are observed and analyzed to identify learning barriers, which usually hinder smooth communication in EFL classroom. In an attempt to provide better pedagogical solution, the learners’ self-efficacy is scrutinized which is later on linked with their language performance in completing the classroom task and their final grade of English Speaking and Writing subjects. Three classes comprising 20 EFL learners from three different universities in South, Southeast and Central Sulawesi are taken as participants of the study to answer two research questions; (1) What types of strategic language competence invested by EFL learners to complete classroom tasks and to gain better grade in English speaking and writing subject? (2) How does self-efficacy affect the choice of such investment? Using a qualitative research paradigm, the study reveals that the interactive activities in classroom have made it much easier for learners to develop their confidence in using several types of language competence to complete tasks on speaking and writing such as questioning strategies, choosing appropriate topics, allowing comprehensible input to be internalized, and so on. Self-efficacy as part of learners’ quality also plays important roles in determining the strategic language competence essential in breaking the language classroom barriers. Biodata: Nasmilah is a teaching staff of English Department, Faculty of Letters Hasanuddin University, Makassar Indonesia, and currently the Head of the Department. She is a Ph.D holder in TESOL gained from The University of Newcastle, Australia, and owner of an English Language School, ELI (English Language Institute) Makassar. Nasmilah has disseminated her expertise on English Language Teaching in several national and international conferences. Her main research interest is on EFL and adult learners.