If you want to create discount codes for your students, it is really easy.
First, go into your admin dashboard, click on "Settings" in the side nav at the bottom, then click on the Coupon Code tab. Then click the green "Add Coupon" button to add a coupon.
Set the Code, the percentage discount and expiry date.
Once successfully submitted a list will appear of all your coupons. These can be edited and changed whenever you want.
From a student's perspective, they can apply their Coupon at checkout.