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Darby Vassall Upper School
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2025 Official Accountability Report - Vassal Lane Upper School
Organization Information
DISTRICT NAME
Cambridge (00490000)		TITLE I STATUS
Title I School
SCHOOL
Vassal Lane Upper School (00490320)		GRADES SERVED
06,07,08
REGION
Coastal		FEDERAL DESIGNATION
-

Accountability Information

Overall classificationNot requiring assistance or intervention
Reason for classification
Substantial progress toward targets
Progress toward improvement targetsAccountability percentile
62% - Substantial progress toward targets66

Overall progress toward improvement targets

 20242025
Annual criterion-referenced target percentage55%67%
Weight40%60%
Cumulative Criterion-referenced target percentage
(2024 x 40%) + (2025 x 60%)		62%
Substantial 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)
Points earned Total possible points Weight % Points earned Total possible points Weight %
AchievementEnglish language arts achievement34-44-
Mathematics achievement34-34-
Science achievement04----
Achievement total61260.07867.5
GrowthEnglish language arts growth44-24-
Mathematics growth34-34-
Growth total7820.05822.5
High school completionFour-year cohort graduation rate------
Extended engagement rate------
Annual dropout rate------
High school completion total------
Progress toward attaining English language proficiencyEnglish language proficiency total4410.0---
Additional indicatorsChronic absenteeism04-04-
Advanced coursework completion------
Additional indicators total0410.00410.0
Weighted total5.49.6-5.97.6-
Percentage of possible points 56%-78%-
2025 Annual criterion-referenced target percentage67%

2024 Points awarded

2024 Progress toward improvement targets
Indicator All Students
(Non-high school grades)		 Lowest Performing Students
(Non-high school grades)
Points earned Total possible points Weight % Points earned Total possible points Weight %
AchievementEnglish language arts achievement04-44-
Mathematics achievement04-44-
Science achievement04----
Achievement total01267.58867.5
GrowthEnglish language arts growth34-34-
Mathematics growth34-44-
Growth total6822.57822.5
High school completionFour-year cohort graduation rate------
Extended engagement rate------
Annual dropout rate------
High school completion total------
Progress toward attaining English language proficiencyEnglish language proficiency total------
Additional indicatorsChronic absenteeism34-14-
Advanced coursework completion------
Additional indicators total3410.01410.0
Weighted total1.710.3-7.17.6-
Percentage of possible points 17%-93%-
2024 Annual criterion-referenced target percentage55%

Student group percentile

This group's overall performance relative to the performance of the same student group in schools serving similar grades
55

Overall progress toward improvement targets

 20242025
Annual criterion-referenced target percentage44%26%
Weight40%60%
Cumulative Criterion-referenced target percentage
(2024 x 40%) + (2025 x 60%)		33%
Moderate progress toward targets

2025 Points awarded

2025 Progress toward improvement targets
Indicator High Needs Student Group
(Non-high school grades)
Points earned Total possible points Weight %
AchievementEnglish language arts achievement04-
Mathematics achievement24-
Science achievement04-
Achievement total21267.5
GrowthEnglish language arts growth34-
Mathematics growth34-
Growth total6822.5
High school completionFour-year cohort graduation rate---
Extended engagement rate---
Annual dropout rate---
High school completion total---
Progress toward attaining English language proficiencyEnglish language proficiency total---
Additional indicatorsChronic absenteeism04-
Advanced coursework completion---
Additional indicators total0410.0
Weighted total2.710.3-
Percentage of possible points 26%-
2025 Annual criterion-referenced target percentage26%

2024 Points awarded

2024 Progress toward improvement targets
Indicator High Needs Student Group
(Non-high school grades)
Points earned Total possible points Weight %
AchievementEnglish language arts achievement04-
Mathematics achievement14-
Science achievement34-
Achievement total41267.5
GrowthEnglish language arts growth34-
Mathematics growth34-
Growth total6822.5
High school completionFour-year cohort graduation rate---
Extended engagement rate---
Annual dropout rate---
High school completion total---
Progress toward attaining English language proficiencyEnglish language proficiency total---
Additional indicatorsChronic absenteeism44-
Advanced coursework completion---
Additional indicators total4410.0
Weighted total4.510.3-
Percentage of possible points 44%-
2024 Annual criterion-referenced target percentage44%

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 497.1 500.1 3.0 499.7 2663Recovery Path: Met Target
Lowest Performing 455.4 461.8 6.4 460.3 354Recovery Path: Exceeded Target
High Needs 484.5 482.7 -1.8 486.9 1610Recovery Path: Declined
English Learners and Former English Learners 473.5 469.0 -4.5 476.7 640Recovery Path: Declined
Low Income 479.8 480.5 0.7 482.7 1162Recovery Path: Improved Below Target
Students with Disabilities 478.7 479.4 0.7 480.4 722Recovery Path: Improved Below Target
American Indian or Alaska Native---- 1--
Asian 495.1 496.2 1.1 497.4 462Recovery Path: Improved Below Target
Black or African American 481.7 476.6 -5.1 484.3 680Recovery Path: Declined
Hispanic or Latino 488.3 488.7 0.4 490.2 322Path Forward: Improved Below Target
Multi-Race, Not Hispanic or Latino---- 21--
Native Hawaiian or Other Pacific Islander-------
White 508.7 518.1 9.4 511.4 984Recovery Path: Exceeded Target

Mathematics achievement - MCAS average composite scaled score - Non-high school
Group 2024 Achievement 2025 Achievement Change 2025 Target N Points Reason
All Students 495.9 498.8 2.9 498.7 2693Recovery Path: Met Target
Lowest Performing 464.0 468.3 4.3 468.0 353Recovery Path: Met Target
High Needs 486.2 487.2 1.0 488.5 1612Recovery Path: Improved Below Target
English Learners and Former English Learners 482.0 480.3 -1.7 484.9 640Recovery Path: Declined
Low Income 482.8 484.8 2.0 485.5 1162Recovery Path: Improved Below Target
Students with Disabilities 479.3 482.3 3.0 482.0 723Recovery Path: Met Target
American Indian or Alaska Native---- 1--
Asian 499.7 499.1 -0.6 502.1 470Recovery Path: Declined
Black or African American 482.2 482.5 0.3 485.3 682Recovery Path: Improved Below Target
Hispanic or Latino 487.1 489.8 2.7 490.2 323Recovery Path: Met Target
Multi-Race, Not Hispanic or Latino---- 21--
Native Hawaiian or Other Pacific Islander-------
White 504.2 509.0 4.8 507.2 1004Recovery Path: Exceeded Target

Science achievement - MCAS average composite scaled score - Non-high school
Group 2024 Achievement 2025 Achievement Change 2025 Target N Points Reason
All Students 494.4 493.1 -1.3 498.2 850Recovery Path: Declined
Lowest Performing---- 15--
High Needs 488.9 480.0 -8.9 491.7 510Recovery Path: Declined
English Learners and Former English Learners---- 21--
Low Income 484.5 477.4 -7.1 487.4 410Recovery Path: Declined
Students with Disabilities 486.5 476.0 -10.5 491.0 240Path Forward: Declined
American Indian or Alaska Native-------
Asian---- 14--
Black or African American---- 23--
Hispanic or Latino---- 10--
Multi-Race, Not Hispanic or Latino---- 12--
Native Hawaiian or Other Pacific Islander-------
White 502.8 507.9 5.1 505.8 264Path Forward: Exceeded Target

English language arts growth - Non-high school
Group 2025 Mean SGP N Points Reason
All Students 60.0 2314Exceeded Typical Growth
Lowest Performing 48.2 352Typical Growth - Low
High Needs 55.3 1283Typical Growth - High
English Learners and Former English Learners 54.1 333Typical Growth - High
Low Income 55.7 923Typical Growth - High
Students with Disabilities 49.5 702Typical Growth - Low
American Indian or Alaska Native- 1--
Asian 62.1 384Exceeded Typical Growth
Black or African American 47.2 532Typical Growth - Low
Hispanic or Latino 54.3 263Typical Growth - High
Multi-Race, Not Hispanic or Latino- 19--
Native Hawaiian or Other Pacific Islander----
White 66.0 944Exceeded Typical Growth

Mathematics growth - Non-high school
Group 2025 Mean SGP N Points Reason
All Students 59.0 2483Typical Growth - High
Lowest Performing 55.1 353Typical Growth - High
High Needs 59.9 1423Typical Growth - High
English Learners and Former English Learners 63.6 474Exceeded Typical Growth
Low Income 59.7 1023Typical Growth - High
Students with Disabilities 52.4 703Typical Growth - High
American Indian or Alaska Native- 1--
Asian 59.5 443Typical Growth - High
Black or African American 62.9 584Exceeded Typical Growth
Hispanic or Latino 56.8 283Typical Growth - High
Multi-Race, Not Hispanic or Latino- 19--
Native Hawaiian or Other Pacific Islander----
White 55.6 983Typical Growth - High

Progress toward attaining English language proficiency - Non-high school
Group 2024 Rate (%) 2025 Rate (%) Change Target N Points Reason
All Students 44.4 70.5 26.1 49.6 444Exceeded Target
Lowest Performing-------
High Needs-------
English Learners and Former English Learners 44.4 70.5 26.1 49.6 444Exceeded 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-------

Chronic absenteeism - Non-high school
Group 2024 Rate (%) 2025 Rate (%) Change Target N Points Reason
All Students 15.4 16.6 1.2 14.1 3080Declined
Lowest Performing 23.7 28.6 4.9 20.2 350Declined
High Needs 16.7 19.1 2.4 14.1 1940Declined
English Learners and Former English Learners 16.2 24.7 8.5 13.2 970Declined
Low Income 20.7 18.3 -2.4 17.0 1422Improved Below Target
Students with Disabilities 25.7 20.8 -4.9 22.4 724Exceeded Target
American Indian or Alaska Native---- 1--
Asian 8.2 20.0 11.8 5.3 550Declined
Black or African American 12.0 11.8 -0.2 8.5 852Improved Below Target
Hispanic or Latino 29.7 23.7 -6.0 26.0 384Exceeded Target
Multi-Race, Not Hispanic or Latino---- 21--
Native Hawaiian or Other Pacific Islander-------
White 14.9 14.8 -0.1 13.5 1082Improved Below 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 291 28598Yes 1 290 28799Yes 1 89 8798Yes 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 181 179 180 178 55 53 416 41099Yes1
English Learners and Former English Learners 83 82 82 81 25 23 190 18698Yes1
Low Income 130 128 130 128 44 43 304 29998Yes1
Students with Disabilities 73 72 73 72 24 24 170 16899Yes1
American Indian or Alaska Native 1 1 1 1 0 0 2----
Asian 52 51 51 51 15 14 118 11698Yes1
Black or African American 77 77 77 77 25 25 179 179100Yes1
Hispanic or Latino 36 35 36 35 10 10 82 8098Yes1
Multi-Race, Not Hispanic or Latino 21 21 21 21 12 12 54 54100Yes1
Native Hawaiian or Other Pacific Islander-----------
White 104 100 104 102 27 26 235 22897Yes1


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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