The results are shown in terms of National Percentile (NP). The NP represents the percentage of students whose scores fall below a given student's scale score. For example, a student, whose NP is 65 scored higher than 65% of students who took the test. In this case, the 50% level represents the national average.

In terms of students' performance, MIA has seen a remarkable, steady improvement over the last two years, exceeding the overall national performance average. For example, in the 2006 California Achievement Test ( CAT ), MIA students on average scored better than 81% of students nationally as indicated in the graph to the right. The graph shows averaged CAT test scores of MIA students from 1 st to 9 th grade from 1998 to 2006.