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Atlantis Charter School
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2019 Official Accountability Report - Atlantis Charter School
Organization Information
DISTRICT NAME
Atlantis Charter (District) (04910000)		TITLE I STATUS
Title I School
SCHOOL
Atlantis Charter School (04910550)		GRADES SERVED
K,01,02,03,04,05,06,07,08,09,10,11,12
REGION
Coastal		FEDERAL DESIGNATION
-

Accountability Information

Overall classificationNot requiring assistance or intervention
Reason for classification
Moderate progress toward targets
Progress toward improvement targetsAccountability percentile
30% - Moderate progress toward targets32

Overall progress toward improvement targets

 20182019
Annual criterion-referenced target percentage18%38%
Weight40%60%
Cumulative criterion-referenced target percentage
(2018 x 40%) + (2019 x 60%)		30%
Moderate progress toward targets

2019 Points awarded

2019 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 achievement34-24-34-04-
Mathematics achievement04-24-44-04-
Science achievement04----34-04-
Achievement total31260.04867.5101240.001290.0
GrowthEnglish language arts growth24-24-24----
Mathematics growth14-24-24----
Growth total3820.04822.54820.0---
High school completionFour-year cohort graduation rate------------
Extended engagement rate------------
Annual dropout rate------44----
High school completion total------4420.0---
Progress toward attaining English language proficiencyEnglish language proficiency total3410.0---0410.0---
Additional indicatorsChronic absenteeism44-04-04-04-
Advanced coursework completion------04----
Additional indicators total4410.00410.00810.00410.0
Weighted total3.19.6-3.67.6-5.68.4-0.011.2-
Percentage of possible points 32%-47%-67%-0%-
Percentage of possible points by gradespan40%
Weight of non-high school results:74%		33%
Weight of high school results:26%
2019 Annual criterion-referenced target percentage38%

2018 Points awarded

2018 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 achievement04-14-04-44-
Mathematics achievement04-04-04-04-
Science achievement04----14-44-
Achievement total01260.01867.511247.581267.5
GrowthEnglish language arts growth24-24-14-14-
Mathematics growth14-14-14-04-
Growth total3820.03822.52822.51822.5
High school completionFour-year cohort graduation rate------------
Extended engagement rate------------
Annual dropout rate------34----
High school completion total------3420.0---
Progress toward attaining English language proficiencyEnglish language proficiency total1410.0---------
Additional indicatorsChronic absenteeism04-04-04-04-
Advanced coursework completion------44----
Additional indicators total0410.00410.04810.00410.0
Weighted total0.79.6-1.47.6-1.99.1-5.610.3-
Percentage of possible points 7%-18%-21%-54%-
Percentage of possible points by gradespan13%
Weight of non-high school results:80%		38%
Weight of high school results:20%
2018 Annual criterion-referenced target percentage18%

Overall progress toward improvement targets

 20182019
Annual criterion-referenced target percentage11%29%
Weight40%60%
Cumulative criterion-referenced target percentage
(2018 x 40%) + (2019 x 60%)		22%
Limited or no progress toward targets

2019 Points awarded

2019 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 achievement34-14-
Mathematics achievement04-04-
Science achievement04-04-
Achievement total31267.511247.5
GrowthEnglish language arts growth24-24-
Mathematics growth14-24-
Growth total3822.54822.5
High school completionFour-year cohort graduation rate------
Extended engagement rate------
Annual dropout rate---34-
High school completion total---3420.0
Progress toward attaining English language proficiencyEnglish language proficiency total------
Additional indicatorsChronic absenteeism44-04-
Advanced coursework completion---24-
Additional indicators total4410.02810.0
Weighted total3.110.3-2.29.1-
Percentage of possible points 30%-24%-
Percentage of possible points by gradespan30%
Weight of non-high school results:74%		24%
Weight of high school results:26%
2019 Annual criterion-referenced target percentage29%

2018 Points awarded

2018 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 achievement04-04-
Mathematics achievement04-04-
Science achievement04-34-
Achievement total01267.531247.5
GrowthEnglish language arts growth24-24-
Mathematics growth14-14-
Growth total3822.53822.5
High school completionFour-year cohort graduation rate------
Extended engagement rate------
Annual dropout rate---04-
High school completion total---0420.0
Progress toward attaining English language proficiencyEnglish language proficiency total------
Additional indicatorsChronic absenteeism04-04-
Advanced coursework completion---44-
Additional indicators total0410.04810.0
Weighted total0.710.3-2.59.1-
Percentage of possible points 7%-27%-
Percentage of possible points by gradespan7%
Weight of non-high school results:80%		27%
Weight of high school results:20%
2018 Annual criterion-referenced target percentage11%

Subgroup percentile

This group's overall performance relative to the performance of the same subgroup in schools serving similar grades
51

Detailed data for each indicator

English language arts achievement - MCAS average composite scaled score - Non-high school
Group 2018 Achievement 2019 Achievement Change 2019 Target N Points Reason
All Students 497.3 497.8 0.5 498.3 6523Met Target
Lowest Performing 472.5 474.3 1.8 477.6 1292Improved Below Target
High needs 492.2 493.4 1.2 493.6 3753Met Target
Econ. Disadvantaged 494.7 495.4 0.7 495.7 3003Met Target
EL and Former EL---- 83--
Students w/ disabilities---- 97--
Amer. Ind. or Alaska Nat.-------
Asian---- 12--
Afr. Amer./Black---- 30--
Hispanic/Latino---- 63--
Multi-race, Non-Hisp./Lat.---- 20--
Nat. Haw. or Pacif. Isl.-------
White 497.4 498.0 0.6 498.7 5272Improved Below Target

English language arts achievement - MCAS Composite Performance Index (CPI) - High school
Group 2018 Achievement 2019 Achievement Change 2019 Target N Points Reason
All Students 94.2 95.3 1.1 95.7 793Met Target
Lowest Performing 96.7 82.5 -14.2 99.5 200Declined
High needs 91.4 90.5 -0.9 93.5 371No Change
Econ. Disadvantaged 92.7 89.8 -2.9 94.8 320Declined
EL and Former EL---- 13--
Students w/ disabilities---- 12--
Amer. Ind. or Alaska Nat.-------
Asian---- 3--
Afr. Amer./Black---- 4--
Hispanic/Latino---- 9--
Multi-race, Non-Hisp./Lat.---- 1--
Nat. Haw. or Pacif. Isl.-------
White 96.6 96.4 -0.2 98.2 621No Change

Mathematics achievement - MCAS average composite scaled score - Non-high school
Group 2018 Achievement 2019 Achievement Change 2019 Target N Points Reason
All Students 494.9 494.1 -0.8 496.5 6510Declined
Lowest Performing 473.4 474.0 0.6 477.1 1292Improved Below Target
High needs 490.6 489.0 -1.6 492.1 3730Declined
Econ. Disadvantaged 492.9 490.8 -2.1 494.0 2980Declined
EL and Former EL---- 82--
Students w/ disabilities---- 96--
Amer. Ind. or Alaska Nat.-------
Asian---- 12--
Afr. Amer./Black---- 30--
Hispanic/Latino---- 62--
Multi-race, Non-Hisp./Lat.---- 20--
Nat. Haw. or Pacif. Isl.-------
White 494.9 494.1 -0.8 496.4 5270Declined

Mathematics achievement - MCAS Composite Performance Index (CPI) - High school
Group 2018 Achievement 2019 Achievement Change 2019 Target N Points Reason
All Students 79.5 84.3 4.8 81.3 784Exceeded Target
Lowest Performing 69.3 63.8 -5.5 73.4 200Declined
High needs 75.0 70.8 -4.2 77.6 360Declined
Econ. Disadvantaged 75.0 75.0 0.0 77.6 311No Change
EL and Former EL---- 13--
Students w/ disabilities---- 11--
Amer. Ind. or Alaska Nat.-------
Asian---- 3--
Afr. Amer./Black---- 4--
Hispanic/Latino---- 9--
Multi-race, Non-Hisp./Lat.---- 1--
Nat. Haw. or Pacif. Isl.-------
White 81.9 86.5 4.6 83.9 614Exceeded Target

Science achievement - MCAS Composite Performance Index (CPI) - Non-high school
Group 2018 Achievement 2019 Achievement Change 2019 Target N Points Reason
All Students 72.8 62.1 -10.7 75.5 2170Declined
Lowest Performing-------
High needs 68.0 55.9 -12.1 71.5 1310Declined
Econ. Disadvantaged 69.8 57.3 -12.5 73.2 1060Declined
EL and Former EL---- 32--
Students w/ disabilities---- 35--
Amer. Ind. or Alaska Nat.-------
Asian---- 6--
Afr. Amer./Black---- 11--
Hispanic/Latino---- 23--
Multi-race, Non-Hisp./Lat.---- 2--
Nat. Haw. or Pacif. Isl.-------
White 72.2 61.1 -11.1 75.1 1750Declined

Science achievement - MCAS Composite Performance Index (CPI) - High school
Group 2018 Achievement 2019 Achievement Change 2019 Target N Points Reason
All Students 88.3 89.5 1.2 90.2 623Met Target
Lowest Performing 79.3 70.0 -9.3 82.5 200Declined
High needs 83.3 80.4 -2.9 85.7 280Declined
Econ. Disadvantaged 83.3 82.3 -1.0 85.6 241No Change
EL and Former EL---- 7--
Students w/ disabilities---- 10--
Amer. Ind. or Alaska Nat.-------
Asian---- 3--
Afr. Amer./Black---- 3--
Hispanic/Latino---- 6--
Multi-race, Non-Hisp./Lat.---- 1--
Nat. Haw. or Pacif. Isl.-------
White 89.8 90.3 0.5 91.6 492Improved Below Target

English language arts growth - Non-high school
Group 2019 Mean SGP N Points Reason
All Students 46.0 5362Typical Growth - Low
Lowest Performing 45.7 1282Typical Growth - Low
High needs 45.2 3102Typical Growth - Low
Econ. Disadvantaged 46.1 2462Typical Growth - Low
EL and Former EL- 63--
Students w/ disabilities- 84--
Amer. Ind. or Alaska Nat.----
Asian- 9--
Afr. Amer./Black- 24--
Hispanic/Latino- 53--
Multi-race, Non-Hisp./Lat.- 15--
Nat. Haw. or Pacif. Isl.----
White 46.6 4352Typical Growth - Low

English language arts growth - High school
Group 2019 Mean SGP N Points Reason
All Students 44.7 692Typical Growth - Low
Lowest Performing- 18--
High needs 42.6 302Typical Growth - Low
Econ. Disadvantaged 43.4 252Typical Growth - Low
EL and Former EL- 9--
Students w/ disabilities- 9--
Amer. Ind. or Alaska Nat.----
Asian- 3--
Afr. Amer./Black- 4--
Hispanic/Latino- 7--
Multi-race, Non-Hisp./Lat.- 1--
Nat. Haw. or Pacif. Isl.----
White 43.2 542Typical Growth - Low

Mathematics growth - Non-high school
Group 2019 Mean SGP N Points Reason
All Students 37.6 5351Low Growth
Lowest Performing 40.8 1282Typical Growth - Low
High needs 36.0 3081Low Growth
Econ. Disadvantaged 35.6 2441Low Growth
EL and Former EL- 62--
Students w/ disabilities- 83--
Amer. Ind. or Alaska Nat.----
Asian- 9--
Afr. Amer./Black- 24--
Hispanic/Latino- 52--
Multi-race, Non-Hisp./Lat.- 15--
Nat. Haw. or Pacif. Isl.----
White 37.4 4351Low Growth

Mathematics growth - High school
Group 2019 Mean SGP N Points Reason
All Students 45.4 692Typical Growth - Low
Lowest Performing- 18--
High needs 41.7 302Typical Growth - Low
Econ. Disadvantaged 43.2 252Typical Growth - Low
EL and Former EL- 9--
Students w/ disabilities- 9--
Amer. Ind. or Alaska Nat.----
Asian- 3--
Afr. Amer./Black- 4--
Hispanic/Latino- 7--
Multi-race, Non-Hisp./Lat.- 1--
Nat. Haw. or Pacif. Isl.----
White 41.7 542Typical Growth - Low

Four-year cohort graduation rate - High school
Group 2017 Rate (%) 2018 Rate (%) Change Target (%) N Points Reason
All Students---- 43--
Lowest Performing-------
High needs---- 22--
Econ. Disadvantaged---- 19--
EL and Former EL---- 3--
Students w/ disabilities---- 10--
Amer. Ind. or Alaska Nat.-------
Asian---- 1--
Afr. Amer./Black---- 4--
Hispanic/Latino---- 8--
Multi-race, Non-Hisp./Lat.---- 2--
Nat. Haw. or Pacif. Isl.-------
White---- 28--

Extended engagement rate - High school
Group 2016 Rate (%) 2017 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-------

Annual dropout rate - High school
Group 2017 Rate (%) 2018 Rate (%) Change Target (%) N Points Reason
All Students 0.5 0.4 -0.1 1.0 2434Exceeded Target
Lowest Performing-------
High needs 1.1 0.9 -0.2 1.0 1173Met Target
Econ. Disadvantaged 1.4 0.0 -1.4 1.3 974Exceeded Target
EL and Former EL---- 18--
Students w/ disabilities---- 37--
Amer. Ind. or Alaska Nat.---- 1--
Asian---- 7--
Afr. Amer./Black---- 18--
Hispanic/Latino---- 40--
Multi-race, Non-Hisp./Lat.---- 6--
Nat. Haw. or Pacif. Isl.-------
White 0.8 0.6 -0.2 1.0 1714Exceeded Target

Progress toward attaining English language proficiency - Non-high school
Group 2018 Rate (%) 2019 Rate (%) Change Target N Points Reason
All Students 62.1 63.3 1.2 66.1 793Met Target
Lowest Performing-------
High needs-------
Econ. Disadvantaged-------
EL and Former EL---- 79--
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 2018 Rate (%) 2019 Rate (%) Change Target N Points Reason
All Students 30.4 18.5 -11.9 31.9 270Declined
Lowest Performing-------
High needs-------
Econ. Disadvantaged-------
EL and Former EL---- 27--
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 2018 Rate (%) 2019 Rate (%) Change Target N Points Reason
All Students 15.1 12.5 -2.6 13.6 8874Exceeded Target
Lowest Performing 19.4 21.7 2.3 14.8 1290Declined
High needs 19.8 16.2 -3.6 17.4 5264Exceeded Target
Econ. Disadvantaged 22.2 16.7 -5.5 19.0 3724Exceeded Target
EL and Former EL---- 122--
Students w/ disabilities---- 127--
Amer. Ind. or Alaska Nat.-------
Asian---- 13--
Afr. Amer./Black---- 46--
Hispanic/Latino---- 83--
Multi-race, Non-Hisp./Lat.---- 39--
Nat. Haw. or Pacif. Isl.-------
White 15.5 13.5 -2.0 13.7 7063Met Target

Chronic absenteeism - High school
Group 2018 Rate (%) 2019 Rate (%) Change Target N Points Reason
All Students 32.9 36.1 3.2 30.6 3100Declined
Lowest Performing 34.8 45.0 10.2 29.0 200Declined
High needs 40.0 45.2 5.2 36.2 1770Declined
Econ. Disadvantaged 45.2 47.4 2.2 40.1 1350Declined
EL and Former EL---- 52--
Students w/ disabilities---- 52--
Amer. Ind. or Alaska Nat.---- 2--
Asian---- 8--
Afr. Amer./Black---- 21--
Hispanic/Latino---- 51--
Multi-race, Non-Hisp./Lat.---- 5--
Nat. Haw. or Pacif. Isl.-------
White 33.3 34.5 1.2 30.8 2230Declined

Advanced coursework completion - High school
Group 2018 Rate (%) 2019 Rate (%) Change Target N Points Reason
All Students 43.8 39.4 -4.4 50.3 1320Declined
Lowest Performing-------
High needs 29.1 30.0 0.9 36.5 702Improved Below Target
Econ. Disadvantaged 29.8 34.5 4.7 37.6 582Improved Below Target
EL and Former EL---- 20--
Students w/ disabilities---- 20--
Amer. Ind. or Alaska Nat.---- 1--
Asian---- 4--
Afr. Amer./Black---- 11--
Hispanic/Latino---- 20--
Multi-race, Non-Hisp./Lat.---- 2--
Nat. Haw. or Pacif. Isl.-------
White 47.9 43.6 -4.3 54.4 940Declined

Assessment participation - All students
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 740 738100Yes 1 740 73699Yes 1 301 301100Yes 1

Assessment participation - Subgroups
Group English language arts Mathematics Science Overall
Enrolled Assessed Enrolled Assessed Enrolled Assessed Total Enrolled Total Assessed % Met Target? Years in Rate
High needs 420 419 419 416 172 172 1,011 1,007100Yes1
Econ. Disadvantaged 339 338 338 335 142 142 819 815100Yes1
EL and Former EL 99 98 99 98 46 46 244 24299Yes1
Students w/ disabilities 110 110 110 108 47 47 267 26599Yes1
Amer. Ind. or Alaska Nat.-----------
Asian 15 15 15 15 9 9 39----
Afr. Amer./Black 34 34 34 34 15 15 83 83100Yes1
Hispanic/Latino 75 74 75 74 33 33 183 18199Yes1
Multi-race, Non-Hisp./Lat. 21 21 21 21 3 3 45 45100Yes1
Nat. Haw. or Pacif. Isl.-----------
White 595 594 595 592 241 241 1,431 1,427100Yes1


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 not requiring assistance or intervention. The reason(s) for the district's or school's classification are noted on this report.

Progress toward improvement targets: The criterion-referenced target percentage combines multiple years of data related to 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 cumulative criterion-referenced target percentage of 75% or higher.

The annual 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)

The cumulative criterion-referenced target percentage represents a weighted average of the annual criterion-referenced target percentages. At a minimum, a group must have an annual criterion-referenced target percentage for the most recent year in order to receive a cumulative percentage.

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 multiple years of data for all accountability indicators. School percentiles are not calculated for districts.


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