Charting the correlation between poverty, ELL, and state report cards
November 11, 2009 1:05 pm
Earlier this week, the Oregon Department of Education released report cards for the state’s schools. The scoring system is a new formula that, in my opinion, actually makes testing even more high-stakes. I’m not sure that’s beneficial to our children, teachers, or schools. Here’s a run-down of how this new scoring mechanism works, courtesy of The Oregonian :
A school’s achievement index shows how well it succeeds at teaching reading and math, on a scale from 0 to 133.
A school gets 133 points for every student who exceeds the grade-level standard in reading or math, 100 points for students who meet the standard and 100 points for students who begin far below grade level and reach an ambitious growth target.
For students who neither meet benchmarks nor the growth target, the school gets no points. For minority, special education, limited English and low-income students, the score is doubled — 0 out of 266 possible if the student falls short,200 if he meets, 266 points if the student exceeds. The score for each student is averaged into a schoolwide index. Elementary and middle schools must score 90 points to be outstanding; high schools must score 80 points. A score below 60 lands an elementary or middle school in need of improvement; a score below 50 does that to high schools
Here is a summary of the correlation (not causation) between the new index scores, percent of students qualifying for free and reduced lunches, and percentage of ELL students (via PASW, formerly known as SPSS). These data tables and graphs looked only at the 56 traditional elementary schools and K-8 schools. No, I’m not a statistician – but there’s an awfully strong correlation between the variables.
And a graph of percent of students on F/R lunch (x) vs. index score (y):
And percent of ELL students (x) vs. index scores (y):
And poverty (x) vs. ELL students (y):
Kenneth Libby is an independent education researcher and a recent graduate of Lewis and Clark's Graduate School of Education and Counseling. He writes about national education issues, testing and philanthropy on Schools Matter and Global Ideologies in Education.