ABSTRACT : Good grammar is the foundation of effectivecommunication, regardless of the country and thelanguage they are using.This research study identified the Level of English Grammar Proficiency of teachers.Itwas conducted among Secondary Teachers of Zone 2, Department of Education, Division of Zambales duringthe school year of 2022-2023. The study utilized a descriptive quantitative research design, a combination ofsurvey questionnaire and 80-item multiple choice test as research instrument; and descriptive and inferentialstatistics for analysis of data. Findings revealed that most of the teacher-respondents were female middle adults.The level of grammar proficiency of teacher-respondents was based on Common European Framework ofReference for Languages (CEFR), the standard reference for English Proficiency Level. The level of theirproficiency in Word Order was proficient, Tense and Aspect was advanced, Determiners was proficient,Connectors was proficient, Punctuation was proficient, Sentence Construction was upper intermediate, Parts ofSpeech was proficient, and in Word Choice was proficient. Based on the results of the study, a plan wasdeveloped to improve the level of English grammar proficiency of secondary teachers.
KEYWORDS::English grammar, Grammar proficiency level, secondary teachers