The gift of science has added greatly to the dignity and sublimity of human civilization and science is often acclaimed as an angel of creative ideas. It is to hone these creative ideas that HOLY CROSS SCHOOL has excellent laboratories of Physics, Chemistry and Biology; and it is here that students learn to bring their experiments out of these labs to their daily lives.

1. Physics Lab : It is an ultra modern lab fully equipped with latest apparatus to provide the much needed facilities to the students from classes I to XII. The senior wing lab caters to the requirement of students from classes VI-XII with 35 students at a time. It also includes a dark room for experiments on light. Besides practicals, the lab is also used for activities of the Astronomy Club.

2. Chemistry Lab: The Chemistry Lab in HOLY CROSS SCHOOL is well equipped with all modern apparatus and chemicals required upto class XII. With the seating capacity of about 35 students in this well ventilated hall, the Lab also prides itself of having a balance room for volumetric analysis. Students are guided by qualified teachers and lab assistants to complete their projects and experiments.

3. Biology Lab : The spacious, well ventilated Biology Lab caters to the requirement of senior students. Keeping the latest syllabus in mind the models, specimens, charts, chemicals etc have been well planned. Besides, the lab is self sufficient with other necessary assets such as hot case, refrigerator and water bath etc. The well qualified teachers and lab assistants are yet another asset for the lab.

4. Middle School Science Lab: Situated in the middle wing, the middle school science lab is very well equipped and well lit and can accommodate 30-40 students at a time. The specimens, apparatus and chemicals are available to the students for hands on experience. The students of classes VI-VIII perform experiments and activities related to their lessons. Once every fortnight their classes are also conducted there. The availability of computer in the lab makes it easier for children to prepare and make project presentations. The middle school science lab is a place for learning, experimenting, exploring and relating theory to practical learning. It gives an opportunity to young minds to satisfy their science related curiosities.