
U.S. News & World Report—in collaboration
with School Evaluation Services, a 12
education and data
research and analysis business that provides parents with education
data on schoolmatters.com— analyzed academic
and enrollment data from more than
18,000 public high schools to find the very
best across the country. These
top schools were placed into gold, silver,
or bronze medal categories.
The Ranking Formula - How we got from 18,790 public schools to the top 100
By Robert
Morse Posted November 29, 2007
The 2008 U.S .News & World Report
developed by School
Evaluation Services, a K-12 education data research business run by
Standard &
Poor's, is based on the key principles that a great high school must
serve all its
students well, not just those who are bound for college, and that it
must be able to
produce measurable academic outcomes that show the school is
successfully
educating its student body across a range of performance indicators.
Poverty-Advanced Disadvantaged College Minority
Disadvantaged
Performance Student Readiness
Enrollment Student
Award
Performance Index Enrollment
Gap
1.31 12.4 Not Applicable 46.1% 65.8% Bronze
Classical High,
1.40 3.5 Not Applicable 35.3% 65.1% Bronze
1.21 Not
Available 44.6 0.0% 4.3% Silver
Judging: The first step determined whether each
school's students were performing
better than
statistically expected for the average student in their state. We started by
looking at reading
and math test results for all students on each state's high school
test. We then
factored in the percentage of economically disadvantaged students (who
tend to score lower)
enrolled at the school to find which schools were performing better
than their
statistical expectations.
For those schools
that made it past this first step, the second step determined whether
the school's
least-advantaged students (black, Hispanic, and low-income)
were performing
better than average for similar students in the state. We
compared each school's
math and reading proficiency rates for disadvantaged
students with the
statewide results for these disadvantaged student groups and then
selected schools
that were performing better than this state average.
Schools that made it
through those first two steps became eligible to be judged nationally
on the final step:
college-readiness performance, using Advanced Placement data as the
benchmark for
success. (AP is a College Board program that offers college-level courses at
high schools across
the country.) This third step measured which schools produced the
best college-level
achievement for the highest percentages of their students. This was
done by computing a
"college readiness index" based on the weighted average of the AP
participation rate
(the number of 12th-grade students who took at least one AP test before
or during their
senior year, divided by the number of 12th graders) along with how well
the students did on
those AP tests or quality-adjusted AP participation (the number of
12th-grade students
who took and passed (received
an AP score of 3 or higher) at least
one AP test before
or during their senior year, divided by the number of 12th graders at
that school).
For the college
readiness index, the quality-adjusted AP participation rates were weighted
75 percent in the
calculation and 25 percent of the weight was placed on the simple AP
participation rate. Only
schools that had values greater than 20 in their college
readiness index
scored high enough to meet this criterion for gold medal
selection. The minimum of 20
was used since it represents what it would take to have a
"critical
mass" of students gaining access to college-level coursework.
The top 100 high
schools nationwide with the highest college readiness
index scores were
ranked numerically (ties were broken using the average
number of AP exams
passed per test taker) and awarded gold medals. The
next 405
top-performing high schools nationwide based on their college
readiness index
earned silver medals. An additional 1,086 high schools in
40 states that
passed the first two steps were awarded bronze medals.