The main purpose of the study was to determine the effect of the Home-School Link as a supplementary material on the students’ motivation and performance in mathematics. This study aims to assess the extent of the Home-School Link as a supplementary learning material relative to its components; characteristics; students’ motivation; and performance in mathematics. The research also explores into investigating notable disparities in students’ performance in mathematics. Furthermore, the study also finds the effect of the Home-School Link as a supplementary learning material on the students’ motivation and performance in mathematics. The study employed descriptive research to assess the influence of Home-School Link as a supplementary learning material on students’ motivation and performance in mathematics. Purposive sampling technique was used to 101 Grade 10 students at Pedro Guevara Memorial National High School. Descriptive and inferential statistics, including weighted mean, standard deviation, and T-test. The objectives, key concept, example, assessment, design, clarity, appropriateness and usefulness as components and characteristics of the Home-School Link were very highly validated. Furthermore, the level of students’ motivation in terms of interest and positive attitude was very high, while high in terms of goal clarity and focus and productivity. A notable difference in students’ performance in mathematics between the formative and summative test was observed. Lastly, the Home-School Link as a supplementary learning material was found to be very effective on students’ motivation and performance in mathematics. A significant difference in students’ performance in mathematics between the formative and summative test was noted. Thus, the null hypothesis is rejected. Significant effect of the use of the Home-School Link as a supplementary learning material on students’ motivation was observed, denoted by rejecting the null hypothesis. Lastly, a significant effect of the use of the Home-School Link as a supplementary learning material on students’ mathematics performance in summative test was observed. Thus, the hypothesis is rejected. Based on these results, it was recommended that Mathematics teachers may integrate the use of Home-School Link into their discussion of mathematics concepts that will support the needs of students to have mastery of the topic and boost their self-confidence to participate. Mathematics teachers are encouraged to develop more Home-School Link Material in different topics not only in second quarter topics but in other fields of Mathematics.