The study focuses on the study investigating the relationship between the mathematics teaching practices and junior high school students' mathematical proficiency in Mary Help of Christians College, Canlubang. Specifically, it sought to answer the following questions: (1) What is the level of frequency of mathematics teaching practices of teachers in terms of establishing mathematical goals, making thinking visible, building procedural fluency from conceptual understanding, use, and connecting mathematical representation, elicit, and use evidence of students' thinking and support productive struggle? (2) what is the level of mathematical proficiency of junior high school students in terms of conceptual understanding, procedural fluency, strategic competence, adaptive reasoning, and productive disposition? And (3) Is there a significant relationship between the mathematics teaching practices on the mathematical proficiency of Junior High School Students? The descriptive research approach was used, which entailed gathering the essential data and information to test the hypothesis and answer study-related questions. The researcher utilized a self-made Five-Likert scale questionnaire to obtain data from study participants. The questionnaire was given to research participants via an online survey. The study's respondents comprised 162 students from Grade 7 to Grade 10. Pearson R Correlation, Weighted Mean, and Standard Deviation were used to analyze the data. Based on the study's findings, the mathematics teaching practices are very highly implemented and evident as perceived by the students-participant, and the junior high school students are proficient in mathematics. Alongside, there is a moderately significant relationship between the mathematics teaching practices of the teacher and the mathematics proficiency of junior high school students. The study recommends that the conclusions generative be investigated. With the given result, it is recommended to conduct a similar study. Still, instead of a survey questionnaire to assess the junior high school student's mathematical proficiency, the future researcher can use an exam questionnaire.

Junior High School

Mathematics Teacher

Mathematical Proficiency

Mathematics Teaching Practices