Educators say within 24 to 48 hours of learning new concepts, students can begin to forget information unless its reinforced.
But once school is out most kids like Jacob Benney are eager to erase the memory of structured learning and homework.
"Summer is a big deal for me... I get to sleep in more because I don't have to wake up for school," said Benney, who is entering 9th grade in the fall.
While summer slacking is often even on the minds of adults, its students who have the most to lose.
"The concepts that are learned at the end of the school year are probably the first to go. If they're not reinforced over the summer, they can really lose it," said Jolene Gearing, with Sylvan Learning Center.
"Even though the teachers do an awesome job during the school year, I forget to sit them down and make them learn their math skills. You get caught up in summer," said Jacob's mother Nicole Benney.
Fearing Jacob would fall further behind his classmates, Nicole decided to put the fun of summer on hold, for a few hours a tutoring every week.
"He went in and I would say he has started with a 6th grade level in vocab and in three short months he's up to 9th grade. And with him going into 9th grade he's going to excel from here on out," said Nicole Benney.
In addition to work books and tutoring, educators say even every day tasks can keep your kids sharp.
"Have them help you cook, they can work on their math skills, grocery shopping, they can make change," said Gearing.
A few hours of learning a week means Nicole worries less about Jacob entering high school and succeeding academically.
"Its changed his life, our life and I think he's going to get the main benefit of it, and it falls down hill so little brother gets some benefit too," said Nicole Benney.
"I'm prepared for what's coming up," said Jacob Benney.
Gearing also suggests parents take turns reading with their kids, or begin writing a travel journal, a pen pal or a grandparent.
Gearing also suggests parents visit www.BookAdventure.com as a resource for all reading levels.