<p>Here is a recent response from a College Board statistician that I received after asking a question regarding the scoring on the SAT Subject Test in Latin. Most of this stuff most of yoy may already know, but I thought it might be helpful to some for me to post it…</p>
<p>"All of the reported scores since the recentering are on the
same scale. In other words, the reported scores on the 200-800 scale
are comparable regardless of the form taken.</p>
<p>There are several different forms (or editions) of the SAT
Subject Test in Latin. The questions on the test change from one form
of the test to another. It is impossible to guarantee that the
questions on each form of the test are exactly as difficult as the
questions on the previous form. To avoid penalizing the examinees who
happen to encounter a difficult selection of questions, the scoring
procedure includes an adjustment for difficulty. Because of this
adjustment for difficulty more items must be answered correctly on an
“easy” form of the test to achieve a specific reported score than on a
“hard” form. It is even possible for an examinee to receive a lower
reported score for some number of correct responses on an “easy” form
than he/she would receive for fewer correct responses on a “hard” form.</p>
<p>The raw to reported score conversion scale is specific to each form of
the test. The conversion is established at the first administration of
each form. That same conversion is used every time that form is
administered. The June 2006 administration was the first administration
of that particular form of the SAT Subject Test in Latin. Therefore,
the raw to reported score conversion has not yet been calculated. While
one would expect it to be similar to the disclosed conversion table, it
will not be identical.</p>
<p>In any case, we cannot disclose the conversion tables for non-disclosed
forms of the SAT Subject Tests. They are confidential and proprietary."</p>
<p>N.B. The “recentering” he talks about was done in the early 90’s and the recentered scales for the subject tests may be found in the Real SAT IIs book.</p>