Massachusetts School and District Profiles

Atlantis Charter School

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2026 Official Accountability Report - Atlantis Charter School

Accountability Information

Progress toward improvement targetsAccountability percentile
39% - Moderate progress toward targets41

Overall progress toward improvement targets

20252026
Annual criterion-referenced target percentage39%38%
Weight40%60%
Cumulative Criterion-referenced target percentage
(2025 x 40%) + (2026 x 60%)
39%
Moderate progress toward targets

2026 Points awarded

2026 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 achievement04-24-04-04-
Mathematics achievement24-34-04-04-
Science achievement24----04----
Achievement total41260.05867.501240.00890.0
GrowthEnglish language arts growth24-24-14----
Mathematics growth24-24-24----
Growth total4820.04822.53820.0---
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 total0410.0---1410.0---
Additional indicatorsChronic absenteeism14-04-24-14-
Advanced coursework completion------04----
Additional indicators total1410.00410.02810.01410.0
Weighted total3.39.6-4.37.6-2.510.0-0.17.6-
Percentage of possible points34%-57%-25%-1%-
Percentage of possible points by gradespan46%
Weight of non-high school results:78%
13%
Weight of high school results:22%
2026 Annual criterion-referenced target percentage38%

2025 Points awarded

2025 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 achievement24-24-04----
Mathematics achievement24-24-04----
Science achievement04----04----
Achievement total41260.04867.501240.0---
GrowthEnglish language arts growth24-24-24----
Mathematics growth24-24-34----
Growth total4820.04822.55820.0---
High school completionFour-year cohort graduation rate------44----
Extended engagement rate------24----
Annual dropout rate------04----
High school completion total------61220.0---
Progress toward attaining English language proficiencyEnglish language proficiency total4410.0---0410.0---
Additional indicatorsChronic absenteeism34-04-04----
Advanced coursework completion------14----
Additional indicators total3410.00410.01810.0---
Weighted total3.99.6-3.67.6-2.310.0----
Percentage of possible points41%-47%-23%---
Percentage of possible points by gradespan44%
Weight of non-high school results:77%
23%
Weight of high school results:23%
2025 Annual criterion-referenced target percentage39%

Student group percentile


Overall progress toward improvement targets

20252026
Annual criterion-referenced target percentage33%34%
Weight40%60%
Cumulative Criterion-referenced target percentage
(2025 x 40%) + (2026 x 60%)
34%
Moderate progress toward targets

2026 Points awarded

2026 Progress toward improvement targets
Indicator High Needs Student Group
(Non-high school grades)
High Needs Student Group
(High school grades)
Points earned Total possible points Weight % Points earned Total possible points Weight %
AchievementEnglish language arts achievement04-04-
Mathematics achievement24-04-
Science achievement24-04-
Achievement total41267.501247.5
GrowthEnglish language arts growth24-14-
Mathematics growth24-34-
Growth total4822.54822.5
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 absenteeism14-44-
Advanced coursework completion---04-
Additional indicators total1410.04810.0
Weighted total3.710.3-2.910.7-
Percentage of possible points36%-27%-
Percentage of possible points by gradespan36%
Weight of non-high school results:78%
27%
Weight of high school results:22%
2026 Annual criterion-referenced target percentage34%

2025 Points awarded

2025 Progress toward improvement targets
Indicator High Needs Student Group
(Non-high school grades)
High Needs Student Group
(High school grades)
Points earned Total possible points Weight % Points earned Total possible points Weight %
AchievementEnglish language arts achievement24-04-
Mathematics achievement24-04-
Science achievement04-04-
Achievement total41267.501247.5
GrowthEnglish language arts growth24-24-
Mathematics growth24-34-
Growth total4822.55822.5
High school completionFour-year cohort graduation rate---44-
Extended engagement rate---04-
Annual dropout rate---04-
High school completion total---41220.0
Progress toward attaining English language proficiencyEnglish language proficiency total------
Additional indicatorsChronic absenteeism34-04-
Advanced coursework completion---04-
Additional indicators total3410.00810.0
Weighted total3.910.3-1.910.7-
Percentage of possible points38%-18%-
Percentage of possible points by gradespan38%
Weight of non-high school results:77%
18%
Weight of high school results:23%
2025 Annual criterion-referenced target percentage33%

Detailed data for each indicator

English language arts achievement - MCAS average composite scaled score - Non-high school
Group 2025 Achievement 2026 Achievement Change 2026 Target N Points Reason
All Students 487.2 484.8 -2.4 490.5 6330Recovery Path: Declined
Lowest Performing 462.0 462.9 0.9 467.1 1232Path Forward: Improved Below Target
High Needs 482.8 481.1 -1.7 485.5 4620Recovery Path: Declined
English Learners and Former English Learners 477.2 476.0 -1.2 479.7 1610Path Forward: Declined
Low Income 484.0 482.9 -1.1 487.1 3810Recovery Path: Declined
Students with Disabilities 464.3 465.6 1.3 467.6 1392Path Forward: Improved Below Target
American Indian or Alaska Native-------
Asian---- 14--
Black or African American 489.1 492.0 2.9 492.4 423Path Forward: Met Target
Hispanic or Latino 482.9 482.0 -0.9 485.4 1140Path Forward: Declined
Multi-Race, Not Hispanic or Latino 486.8 482.7 -4.1 489.1 510Path Forward: Declined
Native Hawaiian or Other Pacific Islander---- 1--
White 487.9 484.7 -3.2 491.1 4110Recovery Path: Declined

English language arts achievement - MCAS average composite scaled score - High school
Group 2025 Achievement 2026 Achievement Change 2026 Target N Points Reason
All Students 486.6 478.7 -7.9 489.0 550Recovery Path: Declined
Lowest Performing 469.8 466.7 -3.1 474.9 200Path Forward: Declined
High Needs 482.4 473.6 -8.8 485.7 420Path Forward: Declined
English Learners and Former English Learners---- 12--
Low Income 485.4 474.6 -10.8 488.2 390Path Forward: Declined
Students with Disabilities---- 14--
American Indian or Alaska Native---- 1--
Asian-------
Black or African American---- 4--
Hispanic or Latino---- 17--
Multi-Race, Not Hispanic or Latino---- 2--
Native Hawaiian or Other Pacific Islander-------
White 485.9 484.0 -1.9 488.6 310Recovery Path: Declined

Mathematics achievement - MCAS average composite scaled score - Non-high school
Group 2025 Achievement 2026 Achievement Change 2026 Target N Points Reason
All Students 485.2 485.3 0.1 487.5 6342Recovery Path: Improved Below Target
Lowest Performing 461.1 466.2 5.1 466.3 1233Recovery Path: Met Target
High Needs 481.6 481.7 0.1 483.8 4632Recovery Path: Improved Below Target
English Learners and Former English Learners 477.2 478.0 0.8 480.7 1612Path Forward: Improved Below Target
Low Income 482.1 482.8 0.7 483.9 3822Recovery Path: Improved Below Target
Students with Disabilities 465.7 467.2 1.5 469.1 1402Path Forward: Improved Below Target
American Indian or Alaska Native-------
Asian---- 14--
Black or African American 488.4 493.1 4.7 491.7 424Path Forward: Exceeded Target
Hispanic or Latino 482.4 481.8 -0.6 485.0 1140Path Forward: Declined
Multi-Race, Not Hispanic or Latino 484.0 481.1 -2.9 486.5 510Path Forward: Declined
Native Hawaiian or Other Pacific Islander---- 1--
White 485.2 485.5 0.3 487.5 4122Recovery Path: Improved Below Target

Mathematics achievement - MCAS average composite scaled score - High school
Group 2025 Achievement 2026 Achievement Change 2026 Target N Points Reason
All Students 482.4 479.0 -3.4 484.1 560Recovery Path: Declined
Lowest Performing 474.2 472.8 -1.4 479.3 200Path Forward: Declined
High Needs 479.5 477.2 -2.3 483.6 430Path Forward: Declined
English Learners and Former English Learners---- 13--
Low Income 481.2 477.6 -3.6 485.2 400Path Forward: Declined
Students with Disabilities---- 14--
American Indian or Alaska Native---- 1--
Asian-------
Black or African American---- 4--
Hispanic or Latino---- 17--
Multi-Race, Not Hispanic or Latino---- 2--
Native Hawaiian or Other Pacific Islander-------
White 482.3 479.8 -2.5 484.0 320Recovery Path: Declined

Science achievement - MCAS average composite scaled score - Non-high school
Group 2025 Achievement 2026 Achievement Change 2026 Target N Points Reason
All Students 481.0 483.5 2.5 484.6 2082Path Forward: Improved Below Target
Lowest Performing---- 50--
High Needs 477.8 479.6 1.8 481.6 1482Path Forward: Improved Below Target
English Learners and Former English Learners 476.2 472.4 -3.8 480.3 530Path Forward: Declined
Low Income 477.6 481.6 4.0 481.6 1223Path Forward: Met Target
Students with Disabilities 461.9 462.6 0.7 465.7 382Path Forward: Improved Below Target
American Indian or Alaska Native-------
Asian---- 4--
Black or African American---- 14--
Hispanic or Latino 480.9 476.0 -4.9 484.5 390Path Forward: Declined
Multi-Race, Not Hispanic or Latino---- 19--
Native Hawaiian or Other Pacific Islander-------
White 482.5 483.6 1.1 486.2 1322Path Forward: Improved Below Target

Science achievement - MCAS average composite scaled score - High school
Group 2025 Achievement 2026 Achievement Change 2026 Target N Points Reason
All Students 482.2 476.7 -5.5 489.2 520Recovery Path: Declined
Lowest Performing---- 19--
High Needs 477.7 473.1 -4.6 483.2 390Recovery Path: Declined
English Learners and Former English Learners---- 11--
Low Income 481.1 473.6 -7.5 486.6 360Recovery Path: Declined
Students with Disabilities---- 13--
American Indian or Alaska Native---- 1--
Asian-------
Black or African American---- 4--
Hispanic or Latino---- 15--
Multi-Race, Not Hispanic or Latino---- 2--
Native Hawaiian or Other Pacific Islander-------
White 481.7 481.1 -0.6 488.2 300Recovery Path: Declined

English language arts growth - Non-high school
Group 2026 Mean SGP N Points Reason
All Students 43.1 5142Typical Growth - Low
Lowest Performing 44.7 1152Typical Growth - Low
High Needs 43.0 3682Typical Growth - Low
English Learners and Former English Learners 45.1 1312Typical Growth - Low
Low Income 44.0 3032Typical Growth - Low
Students with Disabilities 38.7 1001Low Growth
American Indian or Alaska Native----
Asian- 12--
Black or African American 42.5 312Typical Growth - Low
Hispanic or Latino 43.1 912Typical Growth - Low
Multi-Race, Not Hispanic or Latino 42.3 352Typical Growth - Low
Native Hawaiian or Other Pacific Islander- 1--
White 42.7 3442Typical Growth - Low

English language arts growth - High school
Group 2026 Mean SGP N Points Reason
All Students 37.7 521Low Growth
Lowest Performing- 19--
High Needs 36.3 391Low Growth
English Learners and Former English Learners- 10--
Low Income 38.1 361Low Growth
Students with Disabilities- 14--
American Indian or Alaska Native- 1--
Asian----
Black or African American- 4--
Hispanic or Latino- 16--
Multi-Race, Not Hispanic or Latino- 2--
Native Hawaiian or Other Pacific Islander----
White 38.6 291Low Growth

Mathematics growth - Non-high school
Group 2026 Mean SGP N Points Reason
All Students 43.2 5142Typical Growth - Low
Lowest Performing 44.8 1152Typical Growth - Low
High Needs 43.5 3682Typical Growth - Low
English Learners and Former English Learners 44.5 1312Typical Growth - Low
Low Income 43.7 3032Typical Growth - Low
Students with Disabilities 42.5 1012Typical Growth - Low
American Indian or Alaska Native----
Asian- 12--
Black or African American 46.5 312Typical Growth - Low
Hispanic or Latino 40.8 902Typical Growth - Low
Multi-Race, Not Hispanic or Latino 38.3 351Low Growth
Native Hawaiian or Other Pacific Islander- 1--
White 43.9 3452Typical Growth - Low

Mathematics growth - High school
Group 2026 Mean SGP N Points Reason
All Students 49.5 522Typical Growth - Low
Lowest Performing- 19--
High Needs 51.0 403Typical Growth - High
English Learners and Former English Learners- 11--
Low Income 51.1 373Typical Growth - High
Students with Disabilities- 14--
American Indian or Alaska Native- 1--
Asian----
Black or African American- 4--
Hispanic or Latino- 16--
Multi-Race, Not Hispanic or Latino- 2--
Native Hawaiian or Other Pacific Islander----
White 45.0 292Typical Growth - Low

Four-year cohort graduation rate - High school
Group 2024 Rate (%) 2025 Rate (%) Change Target (%) N Points Reason
All Students 96.7 93.8 -2.9 95.0 800Declined
Lowest Performing-------
High Needs 98.0 92.8 -5.2 95.0 690Declined
English Learners and Former English Learners---- 21--
Low Income 97.9 92.3 -5.6 95.0 650Declined
Students with Disabilities---- 18--
American Indian or Alaska Native-------
Asian---- 3--
Black or African American---- 3--
Hispanic or Latino---- 27--
Multi-Race, Not Hispanic or Latino---- 7--
Native Hawaiian or Other Pacific Islander-------
White 94.4 92.5 -1.9 95.0 400Declined

Extended engagement rate - High school
Group 2023 Rate (%) 2024 Rate (%) Change Target (%) N Points Reason
All Students 92.7 98.3 5.6 94.8 604Exceeded Target
Lowest Performing-------
High Needs 91.3 100.0 8.7 95.0 514Exceeded Target
English Learners and Former English Learners---- 14--
Low Income 93.5 100.0 6.5 95.0 474Exceeded Target
Students with Disabilities---- 13--
American Indian or Alaska Native-------
Asian---- 1--
Black or African American---- 6--
Hispanic or Latino---- 17--
Multi-Race, Not Hispanic or Latino-------
Native Hawaiian or Other Pacific Islander-------
White 88.7 97.2 8.5 90.8 364Exceeded Target

Annual dropout rate - High school
Group 2024 Rate (%) 2025 Rate (%) Change Target (%) N Points Reason
All Students 1.5 0.0 -1.5 1.3 2674Exceeded Target
Lowest Performing-------
High Needs 2.0 0.0 -2.0 1.8 1884Exceeded Target
English Learners and Former English Learners---- 40--
Low Income 1.8 0.0 -1.8 1.6 1614Exceeded Target
Students with Disabilities---- 53--
American Indian or Alaska Native---- 3--
Asian---- 5--
Black or African American---- 19--
Hispanic or Latino---- 79--
Multi-Race, Not Hispanic or Latino---- 15--
Native Hawaiian or Other Pacific Islander-------
White 1.3 0.0 -1.3 1.1 1464Exceeded Target

Progress toward attaining English language proficiency - Non-high school
Group 2025 Rate (%) 2026 Rate (%) Change Target N Points Reason
All Students 56.8 51.0 -5.8 60.8 1490Declined
Lowest Performing-------
High Needs-------
English Learners and Former English Learners 56.8 51.0 -5.8 60.8 1490Declined
Low Income-------
Students with Disabilities-------
American Indian or Alaska Native-------
Asian-------
Black or African American-------
Hispanic or Latino-------
Multi-Race, Not Hispanic or Latino-------
Native Hawaiian or Other Pacific Islander-------
White-------

Progress toward attaining English language proficiency - High school
Group 2025 Rate (%) 2026 Rate (%) Change Target N Points Reason
All Students 15.2 13.5 -1.7 20.7 371No Change
Lowest Performing-------
High Needs-------
English Learners and Former English Learners-------
Low Income-------
Students with Disabilities-------
American Indian or Alaska Native-------
Asian-------
Black or African American-------
Hispanic or Latino-------
Multi-Race, Not Hispanic or Latino-------
Native Hawaiian or Other Pacific Islander-------
White-------

Chronic absenteeism - Non-high school
Group 2025 Rate (%) 2026 Rate (%) Change Target N Points Reason
All Students 19.5 20.0 0.5 18.0 8971No Change
Lowest Performing 23.6 26.0 2.4 19.0 1230Declined
High Needs 22.6 22.8 0.2 20.2 6671No Change
English Learners and Former English Learners 18.6 18.7 0.1 15.1 2511No Change
Low Income 24.6 24.6 0.0 21.4 5561No Change
Students with Disabilities 27.4 26.6 -0.8 23.8 1772Improved Below Target
American Indian or Alaska Native-------
Asian---- 19--
Black or African American 23.5 18.3 -5.2 19.9 714Exceeded Target
Hispanic or Latino 21.9 16.3 -5.6 17.7 1844Exceeded Target
Multi-Race, Not Hispanic or Latino 16.0 22.4 6.4 14.5 760Declined
Native Hawaiian or Other Pacific Islander---- 1--
White 19.4 21.8 2.4 17.6 5460Declined

Chronic absenteeism - High school
Group 2025 Rate (%) 2026 Rate (%) Change Target N Points Reason
All Students 50.4 48.7 -1.7 48.1 2692Improved Below Target
Lowest Performing 55.0 55.0 0.0 49.2 201No Change
High Needs 59.3 54.3 -5.0 55.5 2104Exceeded Target
English Learners and Former English Learners---- 66--
Low Income 58.5 54.6 -3.9 53.4 1852Improved Below Target
Students with Disabilities---- 62--
American Indian or Alaska Native---- 2--
Asian---- 2--
Black or African American---- 26--
Hispanic or Latino---- 78--
Multi-Race, Not Hispanic or Latino---- 17--
Native Hawaiian or Other Pacific Islander-------
White 50.7 50.0 -0.7 48.2 1442Improved Below Target

Advanced coursework completion - High school
Group 2025 Rate (%) 2026 Rate (%) Change Target N Points Reason
All Students 50.7 43.8 -6.9 54.8 1120Declined
Lowest Performing-------
High Needs 40.6 37.0 -3.6 46.7 810Declined
English Learners and Former English Learners---- 20--
Low Income 40.4 40.3 -0.1 47.2 721No Change
Students with Disabilities---- 17--
American Indian or Alaska Native-------
Asian---- 2--
Black or African American---- 11--
Hispanic or Latino---- 29--
Multi-Race, Not Hispanic or Latino---- 6--
Native Hawaiian or Other Pacific Islander-------
White 53.2 42.2 -11.0 57.3 640Declined

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 715 713100Yes 1 717 716100Yes 1 280 27699Yes 1

Assessment participation - Student Group
Group English language arts Mathematics Science Overall
Enrolled Assessed Enrolled Assessed Enrolled Assessed Total Enrolled Total Assessed % Met Target? Years in Rate
High Needs 526 524 528 527 205 201 1,259 1,25299Yes1
English Learners and Former English Learners 186 185 187 187 73 69 446 44199Yes1
Low Income 438 436 440 439 173 169 1,051 1,04499Yes1
Students with Disabilities 157 157 158 158 55 54 370 369100Yes1
American Indian or Alaska Native 1 1 1 1 1 1 3----
Asian 14 14 14 14 4 4 32----
Black or African American 50 50 50 50 19 18 119 11899Yes1
Hispanic or Latino 142 141 142 142 63 61 347 34499Yes1
Multi-Race, Not Hispanic or Latino 55 55 55 55 21 21 131 131100Yes1
Native Hawaiian or Other Pacific Islander 1 1 1 1 0 0 2----
White 452 451 454 453 172 171 1,078 1,075100Yes1




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