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Boston Latin School

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2018 Official Accountability Report - Boston Latin

Organization Information
DISTRICT NAME
Boston (00350000)
TITLE I STATUS
Title I School
SCHOOL
Boston Latin (00350560)
GRADES SERVED
07,08,09,10,11,12
REGION
Coastal
FEDERAL DESIGNATION
-

Overall results

Progress toward improvement targets
Indicator All students
(Non-high school grades)
Lowest performing students
(Non-high school grades)
All students
(High school grades)
Lowest performing students
(High school grades)
Points earned Total possible points Weight % Points earned Total possible points Weight % Points earned Total possible points Weight % Points earned Total possible points Weight %
AchievementEnglish language arts achievement44-44-44-44-
Mathematics achievement44-34-44-44-
Science achievement44----44-44-
Achievement total121267.57867.5121247.5121267.5
GrowthEnglish language arts growth34-34-34-24-
Mathematics growth14-24-44-34-
Growth total4822.55822.57822.55822.5
High school completionFour-year cohort graduation rate------34----
Extended engagement rate------44----
Annual dropout rate------34----
High school completion total------101220.0---
Progress toward attaining English language proficiencyEnglish language proficiency total------------
Additional indicatorsChronic absenteeism34-04-24-44-
Advanced coursework completion------44----
Additional indicators total3410.00410.06810.04410.0
Weighted total9.310.3-5.97.6-9.910.7-9.610.3-
Percentage of possible points 90%-78%-93%-93%-
Percentage of possible points by gradespan84%
Weight of non-high school results:30%
93%
Weight of high school results:70%
Criterion-referenced target percentage90%
Meeting targets

Subgroup results

Progress toward improvement targets
Indicator High needs Subgroup
(Non-high school grades)
High needs Subgroup
(High school grades)
Points earned Total possible points Weight % Points earned Total possible points Weight %
AchievementEnglish language arts achievement44-44-
Mathematics achievement44-44-
Science achievement44-44-
Achievement total121267.5121247.5
GrowthEnglish language arts growth34-24-
Mathematics growth14-44-
Growth total4822.56822.5
High school completionFour-year cohort graduation rate---04-
Extended engagement rate---44-
Annual dropout rate---44-
High school completion total---81220.0
Progress toward attaining English language proficiencyEnglish language proficiency total------
Additional indicatorsChronic absenteeism24-24-
Advanced coursework completion---34-
Additional indicators total2410.05810.0
Weighted total9.210.3-9.210.7-
Percentage of possible points 89%-86%-
Percentage of possible points by gradespan89%
Weight of non-high school results:30%
86%
Weight of high school results:70%
Criterion-referenced target percentage87%
Meeting targets
Subgroup percentile
This group's overall performance relative to the performance of the same subgroup in schools administering similar assessments 96

Detailed data for each indicator

English language arts achievement - Next-Generation MCAS average composite scaled score - Non-high school
Group 2017 Achievement 2018 Achievement Change 2018 Target N Points Reason
All Students 515.8 518.9 3.1 517.5 7734Exceeded Target
Lowest Performing 501.4 511.1 9.7 505.3 884Exceeded Target
High needs 513.5 518.2 4.7 515.1 2504Exceeded Target
Econ. Disadvantaged 514.2 519.3 5.1 515.8 1374Exceeded Target
EL and Former EL---- 147--
Students w/ disabilities---- 9--
Amer. Ind. or Alaska Nat.-------
Asian 518.2 521.1 2.9 520.1 2254Exceeded Target
Afr. Amer./Black 514.3 513.7 -0.6 515.5 504Exceeded Target
Hispanic/Latino 514.0 518.1 4.1 515.4 1054Exceeded Target
Multi-race, Non-Hisp./Lat.---- 41--
Nat. Haw. or Pacif. Isl.---- 2--
White 514.9 518.0 3.1 516.5 3504Exceeded Target

English language arts achievement - legacy MCAS Composite Performance Index (CPI) - High school
Group 2017 Achievement 2018 Achievement Change 2018 Target N Points Reason
All Students 100.0 100.0 0.0 100.0 4014Exceeded Target
Lowest Performing 100.0 100.0 0.0 100.0 1194Exceeded Target
High needs 100.0 100.0 0.0 100.0 1074Exceeded Target
Econ. Disadvantaged 100.0 100.0 0.0 100.0 864Exceeded Target
EL and Former EL---- 16--
Students w/ disabilities---- 13--
Amer. Ind. or Alaska Nat.---- 1--
Asian 100.0 100.0 0.0 100.0 1184Exceeded Target
Afr. Amer./Black 100.0 100.0 0.0 100.0 304Exceeded Target
Hispanic/Latino 100.0 100.0 0.0 100.0 514Exceeded Target
Multi-race, Non-Hisp./Lat.---- 18--
Nat. Haw. or Pacif. Isl.-------
White 100.0 100.0 0.0 100.0 1834Exceeded Target

Mathematics achievement - Next-Generation MCAS average composite scaled score - Non-high school
Group 2017 Achievement 2018 Achievement Change 2018 Target N Points Reason
All Students 519.4 517.9 -1.5 520.6 7834Exceeded Target
Lowest Performing 505.8 505.2 -0.6 508.6 913Met Target
High needs 519.2 517.9 -1.3 520.6 2534Exceeded Target
Econ. Disadvantaged 520.1 518.9 -1.2 521.1 1404Exceeded Target
EL and Former EL---- 147--
Students w/ disabilities---- 10--
Amer. Ind. or Alaska Nat.-------
Asian 526.1 524.0 -2.1 528.5 2264Exceeded Target
Afr. Amer./Black 514.5 510.8 -3.7 516.5 524Exceeded Target
Hispanic/Latino 518.1 515.2 -2.9 520.0 1074Exceeded Target
Multi-race, Non-Hisp./Lat.---- 40--
Nat. Haw. or Pacif. Isl.---- 2--
White 515.8 515.7 -0.1 517.1 3564Exceeded Target

Mathematics achievement - legacy MCAS Composite Performance Index (CPI) - High school
Group 2017 Achievement 2018 Achievement Change 2018 Target N Points Reason
All Students 100.0 100.0 0.0 100.0 3994Exceeded Target
Lowest Performing 100.0 100.0 0.0 100.0 1194Exceeded Target
High needs 100.0 100.0 0.0 100.0 1074Exceeded Target
Econ. Disadvantaged 100.0 100.0 0.0 100.0 864Exceeded Target
EL and Former EL---- 16--
Students w/ disabilities---- 13--
Amer. Ind. or Alaska Nat.---- 1--
Asian 100.0 100.0 0.0 100.0 1174Exceeded Target
Afr. Amer./Black 100.0 100.0 0.0 100.0 304Exceeded Target
Hispanic/Latino 100.0 100.0 0.0 100.0 504Exceeded Target
Multi-race, Non-Hisp./Lat.---- 18--
Nat. Haw. or Pacif. Isl.-------
White 100.0 100.0 0.0 100.0 1834Exceeded Target

Science achievement - legacy MCAS Composite Performance Index (CPI) - Non-high school
Group 2017 Achievement 2018 Achievement Change 2018 Target N Points Reason
All Students 78.8 82.4 3.6 81.0 3734Exceeded Target
Lowest Performing-------
High needs 76.0 81.6 5.6 79.2 1364Exceeded Target
Econ. Disadvantaged 74.6 79.8 5.2 77.5 634Exceeded Target
EL and Former EL---- 78--
Students w/ disabilities---- 6--
Amer. Ind. or Alaska Nat.-------
Asian 80.7 86.4 5.7 82.6 1124Exceeded Target
Afr. Amer./Black 69.0 73.9 4.9 71.1 234Exceeded Target
Hispanic/Latino 78.6 77.5 -1.1 87.8 513Met Target
Multi-race, Non-Hisp./Lat.---- 22--
Nat. Haw. or Pacif. Isl.-------
White 78.1 81.7 3.6 80.2 1654Exceeded Target

Science achievement - legacy MCAS Composite Performance Index (CPI) - High school
Group 2017 Achievement 2018 Achievement Change 2018 Target N Points Reason
All Students 99.8 99.7 -0.1 100.0 4024Exceeded Target
Lowest Performing 99.6 99.8 0.2 100.0 1194Exceeded Target
High needs 99.7 100.0 0.3 100.0 1074Exceeded Target
Econ. Disadvantaged 99.6 100.0 0.4 100.0 864Exceeded Target
EL and Former EL---- 16--
Students w/ disabilities---- 13--
Amer. Ind. or Alaska Nat.---- 1--
Asian 100.0 99.2 -0.8 100.0 1184Exceeded Target
Afr. Amer./Black 100.0 100.0 0.0 100.0 304Exceeded Target
Hispanic/Latino 99.3 99.5 0.2 100.0 514Exceeded Target
Multi-race, Non-Hisp./Lat.---- 18--
Nat. Haw. or Pacif. Isl.-------
White 99.8 100.0 0.2 100.0 1844Exceeded Target

English language arts growth - Non-high school
Group 2018 Mean SGP 2018 Target N Points Reason
All Students 52.7 50.0 6673Met Target
Lowest Performing 59.5 50.0 873Met Target
High needs 53.6 50.0 2373Met Target
Econ. Disadvantaged 50.3 50.0 1293Met Target
EL and Former EL-- 142--
Students w/ disabilities-- 8--
Amer. Ind. or Alaska Nat.-----
Asian 53.1 50.0 2053Met Target
Afr. Amer./Black 48.5 50.0 462Below Target
Hispanic/Latino 51.9 50.0 933Met Target
Multi-race, Non-Hisp./Lat.-- 38--
Nat. Haw. or Pacif. Isl.-- 2--
White 53.3 50.0 2833Met Target

English language arts growth - High school
Group 2018 Mean SGP 2018 Target N Points Reason
All Students 54.2 50.0 3583Met Target
Lowest Performing 42.6 50.0 1072Below Target
High needs 49.5 50.0 902Below Target
Econ. Disadvantaged 50.5 50.0 793Met Target
EL and Former EL-- 7--
Students w/ disabilities-- 10--
Amer. Ind. or Alaska Nat.-- 1--
Asian 51.6 50.0 1073Met Target
Afr. Amer./Black 52.9 50.0 293Met Target
Hispanic/Latino 56.7 50.0 463Met Target
Multi-race, Non-Hisp./Lat.-- 16--
Nat. Haw. or Pacif. Isl.-----
White 55.2 50.0 1593Met Target

Mathematics growth - Non-high school
Group 2018 Mean SGP 2018 Target N Points Reason
All Students 38.8 50.0 6761Below Target
Lowest Performing 41.4 50.0 902Below Target
High needs 39.5 50.0 2381Below Target
Econ. Disadvantaged 36.4 50.0 1311Below Target
EL and Former EL-- 141--
Students w/ disabilities-- 8--
Amer. Ind. or Alaska Nat.-----
Asian 40.2 50.0 2052Below Target
Afr. Amer./Black 23.9 50.0 480Below Target
Hispanic/Latino 36.4 50.0 941Below Target
Multi-race, Non-Hisp./Lat.-- 38--
Nat. Haw. or Pacif. Isl.-- 2--
White 40.5 50.0 2892Below Target

Mathematics growth - High school
Group 2018 Mean SGP 2018 Target N Points Reason
All Students 68.9 50.0 3504Exceeded Target
Lowest Performing 58.2 50.0 993Met Target
High needs 65.0 50.0 904Exceeded Target
Econ. Disadvantaged 65.5 50.0 784Exceeded Target
EL and Former EL-- 7--
Students w/ disabilities-- 11--
Amer. Ind. or Alaska Nat.-- 1--
Asian 71.1 50.0 1064Exceeded Target
Afr. Amer./Black 60.3 50.0 294Exceeded Target
Hispanic/Latino 65.3 50.0 464Exceeded Target
Multi-race, Non-Hisp./Lat.-- 17--
Nat. Haw. or Pacif. Isl.-----
White 70.0 50.0 1514Exceeded Target

Four-year cohort graduation rate - High school
Group 2016 Rate (%) 2017 Rate (%) Change Target (%) N Points Reason
All Students 98.1 97.4 -0.7 99.3 3803Met Target
Lowest Performing-------
High needs 97.4 94.5 -2.9 100.0 1460Declined
Econ. Disadvantaged 97.3 95.7 -1.6 100.0 1393Met Target
EL and Former EL---- 0--
Students w/ disabilities---- 10--
Amer. Ind. or Alaska Nat.-------
Asian 97.9 98.2 0.3 100.0 1093Met Target
Afr. Amer./Black 95.1 94.3 -0.8 96.3 350Declined
Hispanic/Latino 97.4 100.0 2.6 98.6 384Exceeded Target
Multi-race, Non-Hisp./Lat.---- 13--
Nat. Haw. or Pacif. Isl.---- 1--
White 98.9 97.3 -1.6 100.0 1843Met Target

Extended engagement rate - High school
Group 2015 Rate (%) 2016 Rate (%) Change Target (%) N Points Reason
All Students 99.1 99.8 0.7 100.0 4164Exceeded Target
Lowest Performing-------
High needs 100.0 100.0 0.0 100.0 1534Exceeded Target
Econ. Disadvantaged 100.0 100.0 0.0 100.0 1504Exceeded Target
EL and Former EL---- 2--
Students w/ disabilities---- 3--
Amer. Ind. or Alaska Nat.-------
Asian 100.0 100.0 0.0 100.0 1414Exceeded Target
Afr. Amer./Black 96.4 100.0 3.6 97.4 414Exceeded Target
Hispanic/Latino 100.0 100.0 0.0 100.0 384Exceeded Target
Multi-race, Non-Hisp./Lat.---- 8--
Nat. Haw. or Pacif. Isl.---- 1--
White 98.8 99.5 0.7 99.9 1874Exceeded Target

Annual dropout rate - High school
Group 2016 Rate (%) 2017 Rate (%) Change Target (%) N Points Reason
All Students 0.1 0.2 -0.1 1.0 1,6303Met Target
Lowest Performing-------
High needs 0.0 0.0 0.0 1.0 3054Exceeded Target
Econ. Disadvantaged 0.0 0.0 0.0 1.0 2614Exceeded Target
EL and Former EL---- 9--
Students w/ disabilities---- 40--
Amer. Ind. or Alaska Nat.---- 1--
Asian 0.0 0.0 0.0 1.0 4644Exceeded Target
Afr. Amer./Black 0.6 0.7 -0.1 1.0 1493Met Target
Hispanic/Latino 0.0 0.5 -0.5 1.0 1963Met Target
Multi-race, Non-Hisp./Lat.---- 55--
Nat. Haw. or Pacif. Isl.---- 1--
White 0.1 0.0 0.1 1.0 7644Exceeded Target

Progress toward attaining English language proficiency - Non-high school
Group 2017 Rate (%) 2018 Rate (%) Change Target N Points Reason
All Students-------
Lowest Performing-------
High needs-------
Econ. Disadvantaged-------
EL and Former EL-------
Students w/ disabilities-------
Amer. Ind. or Alaska Nat.-------
Asian-------
Afr. Amer./Black-------
Hispanic/Latino-------
Multi-race, Non-Hisp./Lat.-------
Nat. Haw. or Pacif. Isl.-------
White-------

Progress toward attaining English language proficiency - High school
Group 2017 Rate (%) 2018 Rate (%) Change Target N Points Reason
All Students-------
Lowest Performing-------
High needs-------
Econ. Disadvantaged-------
EL and Former EL-------
Students w/ disabilities-------
Amer. Ind. or Alaska Nat.-------
Asian-------
Afr. Amer./Black-------
Hispanic/Latino-------
Multi-race, Non-Hisp./Lat.-------
Nat. Haw. or Pacif. Isl.-------
White-------

Chronic absenteeism - Non-high school
Group 2017 Rate (%) 2018 Rate (%) Change Target N Points Reason
All Students 4.3 4.0 0.3 3.3 7943Met Target
Lowest Performing 3.2 5.4 -2.2 0.0 920Declined
High needs 4.8 4.5 0.3 2.8 2212Improved Below Target
Econ. Disadvantaged 5.5 5.9 -0.4 1.3 1191No Change
EL and Former EL---- 154--
Students w/ disabilities---- 11--
Amer. Ind. or Alaska Nat.-------
Asian 1.7 0.4 1.3 0.0 2284Exceeded Target
Afr. Amer./Black 4.5 5.8 -1.3 1.1 520Declined
Hispanic/Latino 10.0 10.0 0.0 6.0 1101No Change
Multi-race, Non-Hisp./Lat.---- 41--
Nat. Haw. or Pacif. Isl.---- 2--
White 4.6 3.6 1.0 3.5 3613Met Target

Chronic absenteeism - High school
Group 2017 Rate (%) 2018 Rate (%) Change Target N Points Reason
All Students 9.4 9.3 0.1 8.4 1,6512Improved Below Target
Lowest Performing 16.5 6.7 9.8 11.2 1194Exceeded Target
High needs 14.6 13.5 1.1 11.9 3712Improved Below Target
Econ. Disadvantaged 12.1 13.2 -1.1 8.3 2660Declined
EL and Former EL---- 43--
Students w/ disabilities---- 46--
Amer. Ind. or Alaska Nat.---- 2--
Asian 7.7 6.6 1.1 5.6 4853Met Target
Afr. Amer./Black 10.7 9.2 1.5 6.9 1422Improved Below Target
Hispanic/Latino 12.2 13.1 -0.9 8.8 1980Declined
Multi-race, Non-Hisp./Lat.---- 57--
Nat. Haw. or Pacif. Isl.---- 3--
White 9.3 10.3 -1.0 8.0 7640Declined

Advanced coursework completion - High school
Group 2017 Rate (%) 2018 Rate (%) Change Target N Points Reason
All Students 94.5 95.9 1.4 97.7 8024Exceeded Target
Lowest Performing-------
High needs 89.0 85.1 -3.9 97.0 1483Met Target
Econ. Disadvantaged 89.0 84.4 -4.6 97.5 1283Met Target
EL and Former EL---- 5--
Students w/ disabilities---- 22--
Amer. Ind. or Alaska Nat.-------
Asian 95.6 99.1 3.5 100.0 2234Exceeded Target
Afr. Amer./Black 92.0 90.0 -2.0 100.0 803Met Target
Hispanic/Latino 92.2 94.9 2.7 100.0 984Exceeded Target
Multi-race, Non-Hisp./Lat.---- 23--
Nat. Haw. or Pacif. Isl.---- 1--
White 95.5 95.5 0.0 98.5 3774Exceeded Target

Assessment participation
Group English language arts Mathematics Science
Enrolled Assessed % Met Target? Years in Rate Enrolled Assessed % Met Target? Years in Rate Enrolled Assessed % Met Target? Years in Rate
All Students 1,190 1,17499Yes 1 1,190 1,18299Yes 1 777 775100Yes 1
Lowest Performing---------------
High needs 364 35798Yes 1 364 36099Yes 1 244 243100Yes 1
Econ. Disadvantaged 228 22398Yes 1 228 22699Yes 1 149 149100Yes 1
EL and Former EL 165 16399Yes 1 165 16399Yes 1 95 9499Yes 1
Students w/ disabilities 24 2296Yes 2 24 2396Yes 1 19----
Amer. Ind. or Alaska Nat. 1---- 1---- 1----
Asian 344 343100Yes 1 344 343100Yes 1 231 230100Yes 1
Afr. Amer./Black 82 8098Yes 1 82 82100Yes 1 53 53100Yes 1
Hispanic/Latino 161 15697Yes 1 161 15798Yes 1 103 10299Yes 1
Multi-race, Non-Hisp./Lat. 59 59100Yes 1 59 5898Yes 1 40 40100Yes 1
Nat. Haw. or Pacif. Isl. 2---- 2---- 0----
White 541 53399Yes 1 541 539100Yes 1 349 349100Yes 1


About this Report

Overall classification: All Massachusetts districts and schools with sufficient data are classified into one of two accountability categories: districts and schools requiring assistance or intervention, and districts and schools without required assistance or intervention. The reason(s) for the district or school's classification are noted on this report.

Progress toward improvement targets: The criterion-referenced target percentage combines information about achievement, growth, high school completion, English learner progress, advanced coursework completion, and chronic absenteeism into a single number between 0 and 100. For a group to be considered to be meeting targets it must have a criterion-referenced target percentage of 75% or higher.

The criterion-referenced target percentage is calculated by dividing the weighted total points earned by the weighted total possible points. The calculation for each is displayed below.

Weighted total of points earned = (Total achievement points earned x Achievement weight) + (Total growth points earned x Growth weight) + (Total high school completion points earned x high school completion weight) + (EL progress points earned x EL progress weight) + (Total additional indicator points earned x Additional indicator weight)

Weighted total of possible points = (Total achievement possible points x Achievement weight) + (Total growth possible points x Growth weight) + (Total high school completion possible points x high school completion weight) + (EL progress possible points x EL progress weight) + (Total additional indicator possible points x Additional indicator weight)

Accountability percentile: An accountability percentile between 1 and 99 is reported for most schools. This number is an indication of the school's overall performance relative to other schools that serve similar grades, and is calculated using data for all accountability indicators. School percentiles are not calculated for districts.

Determination of need for special education technical assistance or intervention: The U.S. Department of Education requires Massachusetts to determine which districts (including single school districts) have specific needs for technical assistance or intervention in the area of special education. A district's determination is based on four categories: Meets Requirements (MR); Needs Assistance (NA); Needs Intervention (NI); and Needs Substantial Intervention (NSI). In most cases these categories correspond to the district's results, except when the district has specific compliance needs. This designation helps signal whether outcomes for all students in the district indicate progress, including that of students with disabilities, or whether technical assistance and/or intervention is needed to improve outcomes for all children, especially students with disabilities.


Resources
Interpretive Materials Interpretive Materials
Glossary of 2018 Accountability Terms Glossary of 2018 Accountability Terms

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