Originally Posted by madeinuk
The skip is challenging for as long as it takes to catch up and address any gaps - weeks at most. The rate of learning is such that a mere skip only temporarily halts them. I am using AoPS and next year will be using an online LA class as I am very unwilling to skip my DD again.

Maybe in math--but in LA and social studies you can always go deeper. With the right teachers it has worked well for my dd (with DYS scores).