"Parents, what I’m about to tell you might blow your mind.
"The 'summer slide' — that idea that kids lose a month or two of learning in the summer if they don’t practice reading and math — probably isn’t real.
"Yet, since the 1980s when the first research about this came out, we’ve been told that our kids come back to school in August knowing less than what they knew in May and it takes them a while to catch up.
"Libraries, school districts, bookstores have all created programs around this idea.
"Yet, when Associate Professor at the LBJ School of Public Affairs at The University of Texas Paul von Hippel tried to replicate the 1980s and 1990s studies using data from newer educational tests, he couldn’t do it. Hippel studies education policy and evaluates programs using statistics."