According to the National Summer Learning Association -- nine in ten teachers say they spend at least three weeks re-teaching lessons at the start of the school year.
There's a range of reasons why students aren't getting that extra help during the summer. One of them includes parents wanting to give their children a break. "For the students who are behind in school, it's a great time to catch up," said Executive Director of Sylvan Learning Center of Mentor Missy Fryer.
Another reason students are experiencing the summer slide is a lack of access and affordability. According to the After School Alliance, the average weekly cost for summer programs is about $288 per child per week. More than half of families not enrolled in a summer program say they would if one was available to them.