You have created a strawman argument... This has nothing to do with standardized testing or "state of the art", it's about learning. There are many situations

You have created a strawman argument... This has nothing to do with standardized testing or "state of the art", it's about learning. There are many situations where there are multiple approaches to a problem and none of them are more "correct" than the other ones. > but "recommened" approach needs 3min in order to get this done, meanwhile your's solution needs 15min The point is that what if the recommended approach takes someone 15min, and a different approach that they understand better takes 3min.