Tuesday, December 11, 2012

Delivery targets: impact on overall scores

Meeting 2013 delivery targets will produce impressive growth in the "overall scores" that combines all of a school's data in a single accountability number on a 0-100 scale.

For example, meeting delivery targets will result in:

  • 3.3 points improvement in the statewide elementary overall score.
  • 4.0 points improvement in the statewide middle school score.
  • 3.3 points improvement in the statewide high school score.

Improvement will be quicker for schools with results below the statewide level, and slower for those above. That's because delivery targets expect more improvement from those who have more to improve.

Because delivery targets are so ambitious, they can also have a big impact on schools' AMOs (short for annual measurable objectives).  AMOs are another part of our new approach to accountability, and they work by taking schools' overall score and asking for increases of:
  • 1.0 points from schools in the bottom 70% for their level.
  •  0.5 points for schools in the top 30% for their level.
Schools that make their delivery targets will exceed their AMOs with plenty of margin to spare!

Better yet, meeting delivery targets will allow schools to move rapidly toward overall scores of 100.
That's sweet news, because 100 is the overall score that will mean all Kentucky students are on track to graduate ready for college and career after consistently making expected growth.

Note to arithmetic lovers: my basic method here is to work out how much each subject's 2012 percent proficient will improve to hit that subject's 2013 delivery target; then multiply by 20% to show how that will change the achievement part of the overall overall score; and then work out how much that will change the overall score by multiplying by 30%, 28%, or 20% for elementary, middle or high schools.  I repeated the same approach for the gap group.  For middle school, I added in a readiness target weighted at 16%, and for high school I added in readiness and graduation each weighted at 20%. E-mail me if you want to see the whole set of calculations.

No comments:

Post a Comment

Updates and data on Kentucky education!