Friday, May 27, 2016

What is this "Effect Size" researchers throw around?

Effect Size Explained

We hear about effect size all the time.  I don't know about you, but I didn't completely understand the numbers.  Eric Jensen's  Poor Students, Rich Teachers (ch 2) explains effect size. Ah-ha!! 

0.00 or less = negative effect
0.00 - 0.20 = Negligible or unclear effects
0.21 - 0.40 = small/moderate effects
0.41 - 0.60 = moderate to strong effects --> 0.50 is 1 years worth of growth
0.61 - 2.00 = extremely positive effects --> 1.00 is 1 is 2 years worth of growth;1.50 is 3 years growth

As you look at strategies that provide effect size take into account that students coming from poverty have academic gaps and usually need more than a years worth of growth.  It can be accomplished if we focus our efforts by using what researchers have found to be the most beneficial tactics.  

Don't simply keep adding to what you do.  
Take a good look at your overflowing toolbox...
now let it go (singing...) and put in what works.