[danneu]

    students are most likely to outperform peers, 
    both in traditional district schools and at 
    other charters, if they attend schools that are 
    open at least 10 days more than the conventional year.

I have a hard time believing it was those 10 days that made a difference.

Anyways, I was fortunate enough growing up to be part of the middle-income demographic, so didn't share the struggles of the article. The already-long, unchallenging, insulting school days/semesters were a struggle as it was. Extending that awful experience would've been gravely detrimental.

[pytrin]

This article makes the common mistake of confusing correlation with causation. Some data points might correlate but that doesn't imply they cause each other.

[dohko]

Exactly right. Did they actually compare students from same school districts but different income families?

I would think that what is most likely is that good income family students (who can afford summer schools) probably go to better school, which is by itself self-reinforcing.

[tomkit]

I don't think you'll get that kind of in-depth analysis and research from a "a nonprofit that promotes expanding learning time to improve student achievement".

[pytrin]

It's easier to just run a couple of surveys and pick the stats that make your case stick.

[genwin]

Plus, "Most likely to outperform peers" at what? I suspect at stuff that won't help them much in their adulthood.