Checkmate is a savings app with over one million users that have saved $$$ on brands like Outschool.
The Checkmate extension automatically applies Outschool discount codes, Outschool coupons and more to give you discounts on products like High School Geometry | Full Curriculum (2 Classes/Week).
Checkmate users have also been loving these products from Outschool.
Users have been saving products like this to their collections.