I updated my listing, why didn't it change where it appears?
It is possible that after updating, your listing does not change position. Your position depends on the calculation using your signup date and your last update date. If you recently signed up or updated, the number calculated will not change very much. If all the other tutors keep their listings up to date, again it isn't likely your position will change. Even though your position may not change, updating maximizes your listing's natural points and help maintain your position in the list.
With the introduction of listing points, tutors now have the option to bid for placement. After you update your listing to maximize your natural listing points, you can add listing points to further boost it's position if you want.