The Composite Lab of Siddhi Vinayak Public School is a laboratory that integrates the subjects of physics, chemistry, biology, and mathematics. The lab is equipped with various apparatus, models, charts, and specimens that help the students to learn and experiment with the concepts of science and math. The lab also has a computer facility that enables the students to access online resources and software for learning and research. The lab is designed to foster curiosity, creativity, and innovation among the students. The lab is one of the facilities that the school provides to its students as a CBSE-affiliated school.