Yes, madeinuk, I'm glad you mentioned Chicago...
- 3rd grade is 1.3 years below average
- 8th grade is 0.4 years below average
- 6 years growth in 5 years places these students at average

What I find more intriguing are the bubbles which are both high achieving and lower SES, such as Johnson City, TN, where 8th graders are 1.8 years above average.

smile

Great observations, brilliantcp.