Current Study.com Coupon Codes

[Merlin]

That's the only referral coupon available, the others available are on the Yahoo groups, which is 30% multiple months.  You still need to join the group to get the coupon available.  Essentially, I think you need to start a new account to get any type of coupon added to Study.com

I'm pretty sure the discount from the Yahoo group is deeper than that (it seemed closer to 50%) and can be used on existing accounts, but it requires signing up for an annual plan (which, as others have discovered, cannot be paused mid-subscription). Unless you know you'll use the SDC account for that long, it isn't really worthwhile though.