The recommended duration for young learners depends on their exact age as well as their learning style. However, for learners between the age of 6 years and 9 10 years we do not recommend more than one hour of instruction at a time. This is due to the fact that it is easy for learners of this age to become distracted and lose focus after this amount of time.  For learners between the ages of 10 years and 13 years the duration could be a little longer, however no more than 1.5 hrs.