which school did you finally choose. i'm under same situation. relocating to GGN.
Gurgaon has numerous good CBSE International schools providing top-class education to kids. I remember one of my friends son going to The Paras World School CBSE School in Gurgaon Sector 50. The Paras World schools are very good academically they also focus on all around development of the kids. The qualified faculties at paras world school which continuously strives to make learning a pleasurable experience for children. I think it is the best CBSE school in gurgaon sector 50.
All the best!