sentences:  According to a series of 39 meta-analyses collected by Harris Cooper in a study on elementary and early childhood education, students' test scores drop significantly from the last day of school in the spring to the first day in the fall; on average, the summer break sets students back over a month.For primary and secondary school students, reading comprehension, in particular, is highly affected by summer learning loss.If students are able to participate in academic activities during the summer months, they are less likely to be at risk for summer learning loss.