ok so i guessing they're asking for your opinion on the subject . Do YOU want to be paid for doing good in school? Then, they're asking you to write a letter of your opinion and first open it if you support it or if you oppose the movement of paying students for doing good in school
Efficient means someone who is working in a well-organized way and plans things well. So think of what a character would do being "well-organized" "well-planned" ...etc.