In general the student discount coupon can be used only once per individual.
For example, if you used it in the 1st year at a 4-year educational institution, you can use it for 3 years, but you cannot use it in the 4th year. However this restriction does not necessarily apply if you advanced to a higher level of education. If you want to use the student discount again after advancing to a higher level of education once the period of use expired, apply for the student discount again.
Click here to apply for the student discount.