Hi Paola,
Thank you for contacting the Microsoft Community/.
I appreciate your interest in taking the AZ-900 exam and I know the significance of utilizing your student discount to save some money for your exam fee. Allow me to give you the details and instructions on how to use your student discount.
To get the student discount, you must verify your academic status in your Learning profile. To do this, please follow the steps guided in Identify yourself as a student in your certification profile page.
Note that once you complete the academic identification process, you will be receiving a confirmation email within 3-5 business days through your registered email address that your student verification has been completed. We recommend checking your spam and junk folder as sometimes emails are routed to those folders.
Please know that if your account has been verified, you should see "Congrats! You're qualified for academic discounts!" on your Certification Profile, and please be informed that the discount will be tied to your certification profile when you schedule an exam.
In addition to that, once you have verified yourself as a student, you are entitled to an academic pricing which offers 30% for Fundamentals exam (all countries) and 45% for All Role Base Exam (except India and China). In this case, even if it shows no discounts available at the registration process page, the discount will automatically be deducted on the checkout page. You may compare the original price of the exam to the total amount that appears in the checkout page if it's deducted.
In case the student discount is not appearing at the checkout page, I would recommend following the troubleshooting steps below to resolve this issue as this is often due to browser error:
Open Microsoft Edge browser via InPrivate browser
Clear cache and cookies then restart browser
Edit your profile and save again make sure there are no special or local characters on your profile information.
If you still can't avail the discount after verification, kindly send me a step-by-step screenshot using Problem Steps Recorder (PSR) (click this link for MAC device) throughout the entire process, starting from your Learn Profile page, up until the last page that shows you're unable to proceed and send it along with the information requested to the private message I initiated.
Please let me know if further assistance is needed.
I look forward to your response. Please note that if no response is received after two business days, the case will be closed and locked. After the case is locked, we will no longer be able to respond, even through Private Messages.
Best Regards,