Teachers collaborate in a variety of ways when they are connected. They talk about the education of the students, exchange concepts and materials, collaborate on projects, and produce new knowledge. This study looked at the degree of teacher collaboration on the Sanchez Mira campus of Cagayan State University in the Philippines. It also examined the respondents’ profiles, including their level of effectiveness as teachers. The degree of teacher collaboration and instructional effectiveness were also assessed for significant associations among the profile factors. The study’s research methodology was descriptive correlational, having the campus faculty members as the respondents. Frequency, percentage, and chi-square tests were used to analyze the data. The level of teacher collaboration acquired an overall mean of 3.72. With a focus on the level of teaching effectiveness, the faculty members manifested an outstanding performance, as exemplified by a mean of 96.53 or 97. Educational attainment is significantly related to collaboration. Trainings in teacher collaboration are also significantly related to teacher collaboration on dialogue. There exists a significant relationship between trainings on teacher collaboration and the level of teacher collaboration. A highly significant correlation exists between teacher collaboration training and teaching effectiveness rating. A highly significant correlation was also established between the factors of teacher collaboration and the instructional effectiveness of the faculty members.