The state Department of Education released data Friday showing that 50 of the state's 82 districts achieved the top two ratings of "excellent" or "good" on 2013 state report cards. That compares to 42 last year.
The top tiers showed only slight improvement when broken down by schools. Five additional schools received an "excellent," while two fewer schools rated "good." In the bottom tier, 14 schools are no longer considered "at risk."
By student population, 69 percent of students attend the state's best-rated schools, compared to 9 percent in the worst. Thirty-two percent attend "average" schools.
The on-time graduation rate improved to 77.5 percent, up 2.6 percentage points.