Percentage of students scoring proficient or higher
2014 2015 2016 2017 2018 N 293 306 301 271 343 # 278 280 284 257 321 Billerica % 95% 91% 95% 95% 94% 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 293 308 298 271 346 # 257 228 238 224 304 Billerica % 88% 74% 79% 82% 88% 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 282 292 287 256 326 # 256 231 240 235 295 Billerica % 91% 79% 84% 91% 91% 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 293 306 301 271 343 # 278 280 284 257 321 Billerica CPI 98.20 96.80 97.90 98 98 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 293 308 298 271 346 # 257 228 238 224 304 Billerica CPI 95.70 88.20 91.80 92.30 95.50 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 282 292 287 256 326 # 256 231 240 235 295 Billerica CPI 96.70 91.10 93.40 97.30 97.50 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 264 272 269 246 Billerica SGP 52.0 42.0 42.0 39.0 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 266 269 269 244 Billerica SGP 58.0 41.0 52.0 51.0 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 320 Billerica SGP 49.7 N   Select a Comparable District SGP N 61,055 State SGP 49.9		2018 N 322 Billerica SGP 51.7 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 290 303 298 270 337 # 259 260 260 239 302 Billerica % 89% 86% 87% 89% 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 290 305 295 270 340 # 237 192 206 189 268 Billerica % 82% 63% 70% 70% 79% 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           #           Billerica % N           #           Select a Comparable District %           N           #           State %