In recent years, there has been talk about the need to transform school education. Among the ideas is the transition to mastery learning, a system of learning every topic one hundred percent. Mastery learning is a way of learning in which the pupil moves forward at his or her own pace.
In this approach, each topic is taught at 100% and only after the unit is completed does the student move on to the next one.
The speed depends on initial knowledge, personal disposition, and desire.
According to the mastery-learning concept, the ability of students should not be measured by the material they can master, but by the time it takes them to master it. However, many other factors also affect performance: test forms, curriculum, students' initial level, and so on.
Who knows what the future might bring but I like the idea of it.