School Pills
Sugar-coated pills invented by the Wizard that impart knowledge instantly to students.
First named in The Emerald City of Oz, ch. 9
Oh, they take doses of those every night and morning," was the reply. "What do you mean by doses?" Dorothy inquired, wonderingly. "Why, we use the newly invented School Pills, made by your friend the Wizard.
As the books describe them
These pills we have found to be very effective, and they save a lot of time. Please step this way and I will show you our Laboratory of Learning. The Emerald City of Oz, ch. 9