Before taking the test, the student will be asked to pay for the test. If they have a coupon code, they may click “Apply Coupon” prior to typing in their payment method information. As long as the coupon code is valid, the student will be able to use it for either a portion or the entirety of the cost of the Duolingo English Test.
The student has 21 days to take a test starting from their original coupon application date. After 21 days the coupon credit will expire. Coupon credit expiry dates cannot be extended.