If you're not monitoring and/or rewarding your students for daily success, you may be missing out. We've had numerous schools see their student gains "take off like a rocket" after implementing some simple, but effective ideas.
Functioning level
Due to the pre-assessment, Initial Placement (IP) or Initial Placement Motion (IPM), that levels the software for every child to their highest functioning level, students should all be scoring above 70% for each session. If they're not, and it's not common, but something is awry and you should look further into the issue.
Student motivators
Since 70-80% is within reach for every student I would recommend giving them a piece candy for every time they score above 80%. I'd also suggest making some sort of a tally board for them to add one mark to for 80-89% and two marks for >90%. This would be for the class goal for something like a pizza party.