TY - JOUR AU - AB - This descriptive qualitative research aimed to describe, explain and analyzing about the impact of Lesson Study Reflection towards teachers ability in teaching English Language and to find out the impact of th lesson study in teaching and learning process in 8 B Class of SMP IT Insan Mulia Borading School Prigsewu. The data collection technique uses questionnaires and documentation. Data analysis uses Interactive. The result of this research presented that Lesson Study improve the quality of teaching-learning process, the students enthusiasm in learning English improved step by step as the lesson goes on, and it affect students learning outcomes. Keywords: Lesson study, Reflection, English teaching 1. INTRODUCTION English is one of language that used to communicate in the world as international language. According to Nunan in Cahyono (2010) English has become a tool for communication in transportation, commerce, bank ing, tourism, process of technology, diplomacy, and scientific research. The science and technology are conveyed using English English language has been commonly accepted as an active universal language in the world. English is one of the most commonly spoken languages for economic, social and cultural prosperity in contemporary global society and, as a result, has become a worldwide enterprise (Kubota TI - THE EFFECT OF REFLECTION IN LESSON STUDY JO - Jurnal Smart DO - 10.52657/js.v6i2.1307 DA - 2020-08-31 UR - https://www.deepdyve.com/lp/unpaywall/the-effect-of-reflection-in-lesson-study-Ga3Dk3lfkh DP - DeepDyve ER -