As mentioned above your son's date of birth is 10.02.2011. And you are going to admission into class7th. He has completed 11 years till now. So, your son would attain 15 years age at the time of the CBSE final examination. As per CBSE age criteria, candidates should have a minimum of 14 years of age for appearing CBSE final examination. According to CBSE age criteria, your son is eligible to take admission into class 7th for the academic session 2022- 2023. For more information, you can search the website.