The blue markers represent NYC’s traditional public schools, while the red and yellow markers represent charter schools, with the chart plotting the average change in English Language Arts (ELA) scores (0 being the 50th percentile) from the end-of-year 4th grade tests (x-axis) to the end of 5th grade, the first year of middle school. Read Gary Rubinstein’s TeachForUs.org blog post for a more thorough explanation.
From The Slog. View the article here: Slog
