MAP tests are computerized tests that adapt to
your child's level of learning. Each test is uniquely created for your
child as he or she proceeds through the test. As a result, each student
has the same opportunity to succeed and maintain a positive attitude
toward testing. With MAP tests, we can administer shorter tests and use
less class time while still receiving detailed, accurate information
about your child's growth. Each test, consisting of 42 questions for
reading or 52 questions for math) takes about an hour.
The scores are reported on a scale called the RIT scale. RIT stands for Rasch UnIT,
a measurement scale developed to simplify the interpretation of test
scores. This scale is used to measure student achievement and student
growth. The scale is an equal-interval scale, like a yardstick in
inches, so that a change of one unit indicates the same change in
growth, regardless of the actual numerical values. RIT scores range
from about 150 to 300. RIT scores make it possible to follow a
student's educational growth from year to year.
Lexile is a unit for measuring text difficulty and reader
comprehension. Lexile measures are based on predictors of how difficult
a text is to comprehend. Matching a student's Lexile score range to the
Lexile rating of specific texts makes it possible to select reading
material that will be appropriately challenging. Books with Lexile
ratings at the lower end of a student's Lexile range are suitable for
independent reading. Texts in the upper part of a student's Lexile
range are better suited for instructional reading. For more information
about Lexiles, see the Lexile website at: www.lexile.com.
following tables provide a guideline for interpreting RIT scores. A
mean score is an average score. As an example, when compared to the
scores of the roughly 75,000 students in the comparison , or norming
group, a 3rd grader with a RIT reading score of 189 would have the
same skills as the students whose scores fall in the middle of the
overall range. The median, or middle score, for MAP tests is the same,
or nearly the same, as the mean score. This implies that about half of
the students in the norming group have a score that is higher than the
mean score and about half of the students would have a lower score.
Deviation refers to the extent to which scores vary from the mean.
About 68% of all scores will fall in the range between one standard
deviation above the mean and one standard deviation below the mean. As
an example, for 3rd grade, the standard deviation is about 16 and the
mean is about 189. In the comparison group, about 68% of all third
graders' scores will be in the range of 189 ± 16 or between 173 - 205.
More information about NWEA and MAP tests is available at their website, http://www.nwea.org.