New York City Large City Urban-Suburban Rural Average Low Grade 3 61.5% 45.7% 61.4% 65.3% 74.7% 85.5% Grade 4 58.9% 49.2% 61.7% 62.5% 75.3% 87.0% Grade 5 56.7% 43.7% 58.8% 63.5% 74.9% 87.1% Grade 6 48.60% 37.40% 51.20% 56.00% 68.80% 82.80% Grade 7 44.20% 29.50% 44.70% 51.30% 65.80% 80.30% Grade 8 36.60% 24.20% 38.30% 44.70% 57.90% 74.70%