I am creating a language curriculum for Standard Chinese (none exist in my area). If someone gets a question/phrase/word incorrect, for example a phrase from a module on greetings, they should obviously see that same phrase or a different phrase with those same words, again until they don't forget it (using spaced repetition):
A student should meet a word every x, x+5, x+10 minutes to ensure retention
But my question is... what if they get the phrase correct on the first try? Can I assume they've got it and move on? Should I assume it was a fluke and verify? If so, how many more times and does it still follow the same repetition curve/timing?
For example, some implementations of SuperMemo algorithm (such as Anki) take into account getting things incorrect and correct. How is this done?