Abstract
Advancement in learning grammar and using it practically is one of the challenges of English as foreign learners (EFL) learners. Its progression may be expedited or slowed down by a variety of causes. Among the crucial factors, the possible effects of self-evaluation, teacher support, and L2 grit were still untouched which is the target of the current research. In so doing, 86 EFL students at the intermediate level were divided into two groups (i.e., experimental group and control group). The students in the control group (CG) are exposed to normal education, whereas learners in experimental group (EG) get extra instruction to practice self-evaluation and L2 Grit. Moreover, the emphasis on the teacher's position as a facilitator and supporter was more prominent in the EG. Based on data screening which was completed via one-way ANCOVA, learners in EG were more successful in grammar assessment due to the treatment. Further research avenues and educational implications were elaborated upon.