If the high-achievers are bored because they're so much ahead of the rest of the group (probably in part because they're more independent in learning material t

If the high-achievers are bored because they're so much ahead of the rest of the group (probably in part because they're more independent in learning material themselves), why not fund an inexpensive program to guide them towards more advanced topics which they can learn after they're finished with the standard topics and at their leasure?