What you use at school chalkboard version is a vector of author. This vector includes SCHOOL, school bag, Learn hat, Cherry Blossoms, Admission tags. To download vector (JPG, SVG, PNG, AI/EPS types) you need to register the account and log in.
As the free account, you can download for free with some limits.
As the premium account, you can download unlimited, no waiting time, etc. Enjoin premium membership at here