St. Xaviers High School in one of the best CBSE Schools in Gurgaon Delhi NCR with pre primary to grade 12 education. Best high school in sector 49 gurgaon with CBSE affiliation. The Pre-Primary curriculum is professionally designed by experts in the field of Early Childhood Education. Applying the constructivist approach, children are provided with ample opportunities to construct their knowledge and explore their surroundings.