Probability of Completing Algebra I by Eighth Grade, Districts of Interest
| District | “Pre” Cohorts Percent | “Post I” Cohorts Percent | “Post II” Cohorts Percent | Observed Range | p-value for Test of Equality Across Three Periods |
|---|---|---|---|---|---|
| Charlotte-Mecklenburg | 45.23 | 68.03 | 54.93 | 22.8 | < 0.001 |
| Guilford | 34.70 | 77.81 | 76.50 | 43.11 | < 0.001 |
Notes: The “Pre” cohorts consist of students entering seventh grade for the first time in 1999–2000 or 2000–2001. The “Post I” cohorts entered seventh grade in 2001–2002 or 2002–2003. The “Post II” cohorts entered seventh grade in 2003–2004 or 2004–2005. Reported p-values are derived from χ2 tests.