Is it purchased under Student Teacher edition pricing from B & H, if yes, then please refer to :Adobe Student Edition Eligibility Condition | B&H Photo Video Pro Audio
It has detailed detailed information.
Products delivered in a physical box include registration instructions along with information about the documents required to prove academic status and how to submit the information. If the software was purchased via an electronic download, follow the provided instructions on how to obtain your unique product code. You can register your product code at https://www.identit-e.com/adobe. You may provide proof of your academic status via an upload, email or fax. Once your information is received and your eligibility for the academic discount is verified, you will receive your serial number. You will be required to enter the serial number during the software installation process.
Regards
Rajshree
