This summer, have your students make their reading meaningful by thoughtfully applying what they learn to areas of their life that matter to them.

In The Effects of Summer Vacation on Achievement Test Scores: A Narrative and Meta-Analytic Review, researchers concluded that:

[T]he summer loss equaled about one month on a grade-level equivalent scale, or one tenth of a standard deviation relative to spring test scores. The effect of summer break was more detrimental for math than for reading and most detrimental for math computation and spelling.

Source: Turning Summer Reading Loss Into Learning Gain