Percentage of students scoring proficient or higher
2014 2015 2016 2017 2018 N 119 112 117 132 141 # 103 96 111 120 126 Nantucket % 86% 85% 95% 91% 90% N           #           Select a Comparable District %           N 70,465 69,751 69,938 70,268 70,532 # 63,214 63,701 63,901 63,887 63,833 State % 89% 91% 92% 91% 91%		2014 2015 2016 2017 2018 N 118 112 117 134 139 # 83 78 79 89 105 Nantucket % 71% 69% 67% 67% 75% N           #           Select a Comparable District %           N 70,607 69,766 69,954 70,340 70,187 # 55,436 54,851 54,359 55,415 54,500 State % 78% 78% 78% 79% 78%		2014 2015 2016 2017 2018 N 107 107 109 124 130 # 76 78 87 93 102 Nantucket % 71% 73% 80% 75% 79% N           #           Select a Comparable District %           N 68,495 67,732 67,941 68,063 67,875 # 48,613 48,530 49,868 50,590 50,532 State % 71% 71% 73% 74% 75%
Composite Performance Index (CPI)
2014 2015 2016 2017 2018 N 119 112 117 132 141 # 103 96 111 120 126 Nantucket CPI 93.70 93.30 97.40 96.40 95.70 N           #           Select a Comparable District CPI           N 70,465 69,751 69,938 70,268 70,532 # 63,214 63,701 63,901 63,887 63,833 State CPI 96 96.70 96.70 96.50 96.20		2014 2015 2016 2017 2018 N 118 112 117 134 139 # 83 78 79 89 105 Nantucket CPI 85.20 83.30 84 84.50 89.60 N           #           Select a Comparable District CPI           N 70,607 69,766 69,954 70,340 70,187 # 55,436 54,851 54,359 55,415 54,500 State CPI 90 89.90 89.70 89.90 89.50		2014 2015 2016 2017 2018 N 107 107 109 124 130 # 76 78 87 93 102 Nantucket CPI 88.60 87.90 92.40 88.90 91.90 N           #           Select a Comparable District CPI           N 68,495 67,732 67,941 68,063 67,875 # 48,613 48,530 49,868 50,590 50,532 State CPI 87.90 88.20 88.90 89.40 89.30
Median student growth percentiles (SGP) (2014 - 2017)
2014 2015 2016 2017 N 86 77 95 88 Nantucket SGP 62.5 69.0 71.0 69.5 N         Select a Comparable District SGP N 61,694 61,218 60,642 60,857 State SGP 50.0 51.0 50.0 50.0		2014 2015 2016 2017 N 86 81 96 90 Nantucket SGP 44.0 47.0 37.0 48.0 N         Select a Comparable District SGP N 61,969 61,548 60,820 60,553 State SGP 50.0 50.0 50.0 50.0
Average student growth percentiles (SGP) (2018)
2018 N 105 Nantucket SGP 63.5 N   Select a Comparable District SGP N 61,055 State SGP 49.9		2018 N 104 Nantucket SGP 55.3 N   Select a Comparable District SGP N 60,804 State SGP 49.9
Percentage of students averaging 2 or above on open response items
2014 2015 2016 2017 2018 N 117 112 117 131 136 # 94 94 106 110 122 Nantucket % 80% 84% 91% 84% 90% N           #           Select a Comparable District %           N 69,602 68,882 69,027 69,366 69,660 # 57,985 59,820 57,875 59,445 57,706 State % 83% 87% 84% 86% 83%		2014 2015 2016 2017 2018 N 116 112 117 133 134 # 70 56 61 67 85 Nantucket % 60% 50% 52% 50% 63% N           #           Select a Comparable District %           N 69,736 68,887 69,032 69,430 69,305 # 50,147 45,240 45,508 46,783 45,707 State % 72% 66% 66% 67% 66%		2014 2015 2016 2017 2018 N           #           Nantucket % N           #           Select a Comparable District %           N           #           State %