Smartick sessions do not accumulate, since the student works in real time and exercises are generated instantaneously, depending on the answers the student provides in each exercise.
If a student misses a session on any given day, that day is lost. However, unperformed sessions are never marked as completed, but instead remain on hold until the student next logs in to Smartick.
If you know of any days that your child will not be able to perform their session in advance, you can notify us of the absence. Go to the Tutor Page and look under Student Profile > Mute notifications to find out how to do it.