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Atlantis Charter School

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2025 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
43% - Moderate progress toward targets41

Overall progress toward improvement targets

 20242025
Annual criterion-referenced target percentage50%39%
Weight40%60%
Cumulative Criterion-referenced target percentage
(2024 x 40%) + (2025 x 60%)
43%
Moderate progress toward targets

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 points 41%-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%

2024 Points awarded

2024 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 achievement14-24-44----
Mathematics achievement24-24-44----
Science achievement24----24----
Achievement total51260.04867.5101240.0---
GrowthEnglish language arts growth24-24-24----
Mathematics growth24-24-24----
Growth total4820.04822.54820.0---
High school completionFour-year cohort graduation rate------24----
Extended engagement rate------04----
Annual dropout rate------34----
High school completion total------51220.0---
Progress toward attaining English language proficiencyEnglish language proficiency total1410.0---3410.0---
Additional indicatorsChronic absenteeism24-24-04----
Advanced coursework completion------04----
Additional indicators total2410.02410.00810.0---
Weighted total4.19.6-3.87.6-6.110.0----
Percentage of possible points 43%-50%-61%---
Percentage of possible points by gradespan46%
Weight of non-high school results:77%
61%
Weight of high school results:23%
2024 Annual criterion-referenced target percentage50%

Student group percentile

This group's overall performance relative to the performance of the same student group in schools serving similar grades
35

Overall progress toward improvement targets

 20242025
Annual criterion-referenced target percentage28%33%
Weight40%60%
Cumulative Criterion-referenced target percentage
(2024 x 40%) + (2025 x 60%)
31%
Moderate progress toward targets

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 points 38%-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%

2024 Points awarded

2024 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 achievement04-24-
Mathematics achievement24-24-
Science achievement04-14-
Achievement total21267.551247.5
GrowthEnglish language arts growth24-24-
Mathematics growth24-24-
Growth total4822.54822.5
High school completionFour-year cohort graduation rate---14-
Extended engagement rate---04-
Annual dropout rate---34-
High school completion total---41220.0
Progress toward attaining English language proficiencyEnglish language proficiency total------
Additional indicatorsChronic absenteeism24-04-
Advanced coursework completion---04-
Additional indicators total2410.00810.0
Weighted total2.510.3-4.110.7-
Percentage of possible points 24%-38%-
Percentage of possible points by gradespan24%
Weight of non-high school results:77%
38%
Weight of high school results:23%
2024 Annual criterion-referenced target percentage28%

Detailed data for each indicator

English language arts achievement - MCAS average composite scaled score - Non-high school
Group 2024 Achievement 2025 Achievement Change 2025 Target N Points Reason
All Students 485.8 487.2 1.4 489.1 6422Recovery Path: Improved Below Target
Lowest Performing 459.4 463.1 3.7 464.5 1262Path Forward: Improved Below Target
High Needs 481.3 482.8 1.5 484.0 4552Recovery Path: Improved Below Target
English Learners and Former English Learners 475.1 477.2 2.1 477.6 1633Path Forward: Met Target
Low Income 482.5 484.0 1.5 485.6 3862Recovery Path: Improved Below Target
Students with Disabilities 462.7 464.3 1.6 466.0 1142Path Forward: Improved Below Target
American Indian or Alaska Native-------
Asian---- 15--
Black or African American 488.1 489.1 1.0 491.4 422Path Forward: Improved Below Target
Hispanic or Latino 479.0 482.9 3.9 481.5 1004Path Forward: Exceeded Target
Multi-Race, Not Hispanic or Latino 485.0 486.8 1.8 487.3 443Path Forward: Met Target
Native Hawaiian or Other Pacific Islander---- 1--
White 487.1 487.9 0.8 490.3 4402Recovery Path: Improved Below Target

English language arts achievement - MCAS average composite scaled score - High school
Group 2024 Achievement 2025 Achievement Change 2025 Target N Points Reason
All Students 496.4 486.6 -9.8 498.8 520Recovery Path: Declined
Lowest Performing---- 19--
High Needs 489.2 482.4 -6.8 492.5 390Path Forward: Declined
English Learners and Former English Learners---- 10--
Low Income 490.3 485.4 -4.9 493.1 340Path Forward: Declined
Students with Disabilities---- 11--
American Indian or Alaska Native-------
Asian---- 1--
Black or African American---- 6--
Hispanic or Latino---- 15--
Multi-Race, Not Hispanic or Latino---- 3--
Native Hawaiian or Other Pacific Islander-------
White 497.7 485.9 -11.8 500.4 270Recovery Path: Declined

Mathematics achievement - MCAS average composite scaled score - Non-high school
Group 2024 Achievement 2025 Achievement Change 2025 Target N Points Reason
All Students 485.1 485.2 0.1 487.4 6412Recovery Path: Improved Below Target
Lowest Performing 462.7 463.0 0.3 467.9 1262Recovery Path: Improved Below Target
High Needs 481.4 481.6 0.2 483.6 4542Recovery Path: Improved Below Target
English Learners and Former English Learners 476.3 477.2 0.9 479.8 1632Path Forward: Improved Below Target
Low Income 482.3 482.1 -0.2 484.1 3851Recovery Path: No Change
Students with Disabilities 467.5 465.7 -1.8 470.9 1140Path Forward: Declined
American Indian or Alaska Native-------
Asian---- 15--
Black or African American 484.7 488.4 3.7 488.0 423Path Forward: Met Target
Hispanic or Latino 480.1 482.4 2.3 482.7 993Path Forward: Met Target
Multi-Race, Not Hispanic or Latino 486.4 484.0 -2.4 488.9 440Path Forward: Declined
Native Hawaiian or Other Pacific Islander---- 1--
White 485.9 485.2 -0.7 488.2 4400Recovery Path: Declined

Mathematics achievement - MCAS average composite scaled score - High school
Group 2024 Achievement 2025 Achievement Change 2025 Target N Points Reason
All Students 492.2 482.4 -9.8 493.9 520Recovery Path: Declined
Lowest Performing---- 19--
High Needs 484.9 479.5 -5.4 489.0 390Path Forward: Declined
English Learners and Former English Learners---- 10--
Low Income 486.0 481.2 -4.8 490.0 340Path Forward: Declined
Students with Disabilities---- 11--
American Indian or Alaska Native---- 1--
Asian---- 1--
Black or African American---- 6--
Hispanic or Latino---- 14--
Multi-Race, Not Hispanic or Latino---- 3--
Native Hawaiian or Other Pacific Islander-------
White 494.4 482.3 -12.1 496.1 270Recovery Path: Declined

Science achievement - MCAS average composite scaled score - Non-high school
Group 2024 Achievement 2025 Achievement Change 2025 Target N Points Reason
All Students 486.9 481.0 -5.9 490.5 2120Path Forward: Declined
Lowest Performing---- 55--
High Needs 480.7 477.8 -2.9 484.5 1540Path Forward: Declined
English Learners and Former English Learners 469.2 476.2 7.0 473.3 534Path Forward: Exceeded Target
Low Income 481.4 477.6 -3.8 485.4 1320Path Forward: Declined
Students with Disabilities 466.5 461.9 -4.6 470.3 390Path Forward: Declined
American Indian or Alaska Native-------
Asian---- 5--
Black or African American---- 16--
Hispanic or Latino 473.8 480.9 7.1 477.4 354Path Forward: Exceeded Target
Multi-Race, Not Hispanic or Latino---- 18--
Native Hawaiian or Other Pacific Islander-------
White 489.2 482.5 -6.7 492.9 1380Path Forward: Declined

Science achievement - MCAS average composite scaled score - High school
Group 2024 Achievement 2025 Achievement Change 2025 Target N Points Reason
All Students 486.6 482.2 -4.4 493.6 420Recovery Path: Declined
Lowest Performing---- 19--
High Needs 478.8 477.7 -1.1 484.3 300Recovery Path: Declined
English Learners and Former English Learners---- 7--
Low Income 478.7 481.1 2.4 484.2 252Recovery Path: Improved Below Target
Students with Disabilities---- 9--
American Indian or Alaska Native---- 1--
Asian-------
Black or African American---- 5--
Hispanic or Latino---- 11--
Multi-Race, Not Hispanic or Latino---- 3--
Native Hawaiian or Other Pacific Islander-------
White 491.3 481.7 -9.6 497.8 220Recovery Path: Declined

English language arts growth - Non-high school
Group 2025 Mean SGP N Points Reason
All Students 47.9 5302Typical Growth - Low
Lowest Performing 49.6 1262Typical Growth - Low
High Needs 45.8 3742Typical Growth - Low
English Learners and Former English Learners 47.1 1372Typical Growth - Low
Low Income 45.9 3172Typical Growth - Low
Students with Disabilities 43.2 942Typical Growth - Low
American Indian or Alaska Native----
Asian- 13--
Black or African American 40.6 342Typical Growth - Low
Hispanic or Latino 46.8 832Typical Growth - Low
Multi-Race, Not Hispanic or Latino 49.7 392Typical Growth - Low
Native Hawaiian or Other Pacific Islander- 1--
White 48.3 3602Typical Growth - Low

English language arts growth - High school
Group 2025 Mean SGP N Points Reason
All Students 47.0 492Typical Growth - Low
Lowest Performing- 19--
High Needs 45.4 362Typical Growth - Low
English Learners and Former English Learners- 8--
Low Income 46.2 312Typical Growth - Low
Students with Disabilities- 11--
American Indian or Alaska Native----
Asian- 1--
Black or African American- 6--
Hispanic or Latino- 13--
Multi-Race, Not Hispanic or Latino- 3--
Native Hawaiian or Other Pacific Islander----
White 45.1 262Typical Growth - Low

Mathematics growth - Non-high school
Group 2025 Mean SGP N Points Reason
All Students 44.6 5292Typical Growth - Low
Lowest Performing 42.3 1262Typical Growth - Low
High Needs 43.3 3732Typical Growth - Low
English Learners and Former English Learners 45.7 1372Typical Growth - Low
Low Income 42.7 3162Typical Growth - Low
Students with Disabilities 41.1 932Typical Growth - Low
American Indian or Alaska Native----
Asian- 13--
Black or African American 46.4 342Typical Growth - Low
Hispanic or Latino 43.0 832Typical Growth - Low
Multi-Race, Not Hispanic or Latino 43.3 392Typical Growth - Low
Native Hawaiian or Other Pacific Islander- 1--
White 44.6 3592Typical Growth - Low

Mathematics growth - High school
Group 2025 Mean SGP N Points Reason
All Students 54.8 483Typical Growth - High
Lowest Performing- 19--
High Needs 51.6 353Typical Growth - High
English Learners and Former English Learners- 7--
Low Income 51.8 303Typical Growth - High
Students with Disabilities- 11--
American Indian or Alaska Native----
Asian- 1--
Black or African American- 6--
Hispanic or Latino- 12--
Multi-Race, Not Hispanic or Latino- 3--
Native Hawaiian or Other Pacific Islander----
White 55.1 263Typical Growth - High

Four-year cohort graduation rate - High school
Group 2023 Rate (%) 2024 Rate (%) Change Target (%) N Points Reason
All Students 92.7 96.7 4.0 95.0 604Exceeded Target
Lowest Performing-------
High Needs 91.3 98.0 6.7 95.0 514Exceeded Target
English Learners and Former English Learners---- 14--
Low Income 93.5 97.9 4.4 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 94.4 5.7 91.0 364Exceeded Target

Extended engagement rate - High school
Group 2022 Rate (%) 2023 Rate (%) Change Target (%) N Points Reason
All Students 92.2 92.7 0.5 94.3 822Improved Below Target
Lowest Performing-------
High Needs 93.3 91.3 -2.0 95.0 690Declined
English Learners and Former English Learners---- 20--
Low Income 94.8 93.5 -1.3 95.0 620Declined
Students with Disabilities---- 20--
American Indian or Alaska Native-------
Asian---- 1--
Black or African American---- 8--
Hispanic or Latino---- 18--
Multi-Race, Not Hispanic or Latino---- 2--
Native Hawaiian or Other Pacific Islander-------
White 92.5 88.7 -3.8 94.6 530Declined

Annual dropout rate - High school
Group 2023 Rate (%) 2024 Rate (%) Change Target (%) N Points Reason
All Students 0.7 1.5 0.8 1.0 2680Declined
Lowest Performing-------
High Needs 0.9 2.0 1.1 1.0 1980Declined
English Learners and Former English Learners---- 56--
Low Income 1.1 1.8 0.7 1.0 1660Declined
Students with Disabilities---- 53--
American Indian or Alaska Native---- 2--
Asian---- 5--
Black or African American---- 17--
Hispanic or Latino---- 77--
Multi-Race, Not Hispanic or Latino---- 15--
Native Hawaiian or Other Pacific Islander-------
White 1.1 1.3 0.2 1.0 1520Declined

Progress toward attaining English language proficiency - Non-high school
Group 2024 Rate (%) 2025 Rate (%) Change Target N Points Reason
All Students 46.5 56.8 10.3 50.5 1554Exceeded Target
Lowest Performing-------
High Needs-------
English Learners and Former English Learners 46.5 56.8 10.3 50.5 1554Exceeded Target
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 2024 Rate (%) 2025 Rate (%) Change Target N Points Reason
All Students 18.4 15.2 -3.2 23.9 330Declined
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 2024 Rate (%) 2025 Rate (%) Change Target N Points Reason
All Students 21.3 19.5 -1.8 19.8 8823Met Target
Lowest Performing 18.8 23.8 5.0 14.2 1260Declined
High Needs 25.0 22.6 -2.4 22.6 6373Met Target
English Learners and Former English Learners 24.3 18.6 -5.7 20.8 2314Exceeded Target
Low Income 27.4 24.6 -2.8 24.2 5373Met Target
Students with Disabilities 26.5 27.4 0.9 22.9 1570Declined
American Indian or Alaska Native-------
Asian---- 21--
Black or African American 16.4 23.5 7.1 12.8 680Declined
Hispanic or Latino 26.2 21.9 -4.3 22.0 1553Met Target
Multi-Race, Not Hispanic or Latino 17.9 16.0 -1.9 16.4 753Met Target
Native Hawaiian or Other Pacific Islander---- 1--
White 21.3 19.4 -1.9 19.5 5623Met Target

Chronic absenteeism - High school
Group 2024 Rate (%) 2025 Rate (%) Change Target N Points Reason
All Students 42.6 50.4 7.8 40.3 2780Declined
Lowest Performing---- 19--
High Needs 48.6 59.3 10.7 44.8 2090Declined
English Learners and Former English Learners---- 58--
Low Income 48.0 58.5 10.5 42.9 1880Declined
Students with Disabilities---- 55--
American Indian or Alaska Native---- 3--
Asian---- 5--
Black or African American---- 20--
Hispanic or Latino---- 85--
Multi-Race, Not Hispanic or Latino---- 15--
Native Hawaiian or Other Pacific Islander-------
White 45.8 50.7 4.9 43.3 1500Declined

Advanced coursework completion - High school
Group 2024 Rate (%) 2025 Rate (%) Change Target N Points Reason
All Students 51.1 50.7 -0.4 55.2 1461No Change
Lowest Performing-------
High Needs 42.9 40.6 -2.3 49.0 1060Declined
English Learners and Former English Learners---- 28--
Low Income 44.1 40.4 -3.7 50.9 940Declined
Students with Disabilities---- 26--
American Indian or Alaska Native---- 2--
Asian---- 4--
Black or African American---- 7--
Hispanic or Latino---- 45--
Multi-Race, Not Hispanic or Latino---- 9--
Native Hawaiian or Other Pacific Islander-------
White 49.3 53.2 3.9 53.4 793Met Target

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 707 705100Yes 1 706 706100Yes 1 272 271100Yes 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 504 502 503 503 201 200 1,208 1,205100Yes1
English Learners and Former English Learners 178 176 178 178 68 67 424 42199Yes1
Low Income 429 427 428 428 173 172 1,030 1,027100Yes1
Students with Disabilities 127 126 127 127 51 51 305 304100Yes1
American Indian or Alaska Native 0 0 1 1 1 1 2----
Asian 16 16 16 16 6 6 38----
Black or African American 49 49 49 49 23 23 121 121100Yes1
Hispanic or Latino 121 119 119 119 55 54 295 29299Yes1
Multi-Race, Not Hispanic or Latino 48 48 48 48 22 22 118 118100Yes1
Native Hawaiian or Other Pacific Islander 1 1 1 1 0 0 2----
White 472 472 472 472 165 165 1,109 1,109100Yes1


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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