kitchen table math, the sequel: SAT equivalent scores

## Tuesday, July 26, 2011

### SAT equivalent scores

Convert individual and mean scores from the original scale to the recentered scale

In April 1995, the College Board recentered the score scales for all tests in the SAT Program to reflect the contemporary test-taking population. Recentering reestablished the average score for a study group of 1990 seniors at about 500—the midpoint of the 200-to-800 scale—allowing students, schools, and colleges to more easily interpret their scores in relation to those of a similar group of college-bound seniors.
A 700 on critical reading today was a 640 prior to 1995.

A 700 on math today was a 710 prior to 1995, and the math test today covers more material.

kcab said...

Did you read the article that Alison linked in the "Are Schools Preparing..." comment thread? It's interesting, though I skimmed after a bit. I had not been aware of the large steps in scoring at the upper end of the verbal scale prior to recentering. (One error could result in a drop of 30 pts, for instance.)

Crimson Wife said...

Why do the math scores between 660 and 710 go down by 10 pts. while all the other math scores either go up slightly or remain the same? Is there a typo on the table?

debbie stier said...

My math score from 1982, if re-centered, was exactly the same as my score from Jan. 2011 SAT.

I had not been aware of the large steps in scoring at the upper end of the verbal scale prior to recentering. (One error could result in a drop of 30 pts, for instance.)

That cannot have been true for all that period. One of my friends got a 799 on the Verbal -- so, obviously not perfect, but not a drop of 30 points either. We shared results, and I saw the computer printout myself. It was 799. Others got scores that were not multiples of ten -- scores like 682, 714 and so on. There must have been different scoring methods at different times, or else the chart is simply dealing in rounded numbers.

Catherine Johnson said...

Did you read the article that Alison linked in the "Are Schools Preparing...

No!

But I will!

Catherine Johnson said...

One error could result in a drop of 30 pts, for instance

right - the upper end was all screwy

that's why my own verbal score was in the low 700s (and who else talked about that - oh, it was Crimson Wife)

Catherine Johnson said...

My math score from 1982, if re-centered, was exactly the same as my score from Jan. 2011 SAT.

Me, too!

I was SO disappointed!

kcab said...

In the article, it says that the last digit has been set to 0 for 30 years. I believe the stretch from 1972-2002 (pub year) is meant.

For about 30 years, the last digit of
the three-digit score has been fixed at zero. Earlier, a full
three-digit score was reported.

kcab said...

@Crimson Wife - The conversion for the math scores is non-linear. Again - it's in that paper.... on pg. 11.

I'll just re-link, if I can:

The Recentering of SAT scores...

kcab said...

Oops...trying again
The Recentering of SAT scores...