Massachusetts School and District Profiles

Chelsea High

Districts
Schools

2026

Accountability Report

2026 Official Accountability Report - Chelsea High

Organization Information

DISTRICT NAME
Chelsea (00570000)

TITLE I STATUS
Title I School

SCHOOL
Chelsea High (00570505)

GRADES SERVED
09,10,11,12

REGION
Coastal

FEDERAL DESIGNATION
Targeted Support and Improvement (TSI), Additional Targeted Support and Improvement (ATSI)

Accountability Information

Overall classification

Requiring assistance or intervention

Reason for classification

In need of focused/targeted support

Among the lowest performing 10% of schools

Low participation rate: Students with Disabilities -Low Income -Hispanic or Latino -English Learners and Former English Learners -High Needs -All Students

Progress toward improvement targets	Accountability percentile
37% - Moderate progress toward targets	3

OVERALL RESULTS
STUDENT GROUP RESULTS
DETAILED DATA FOR EACH INDICATOR

Overall progress toward improvement targets

	2025	2026
Annual criterion-referenced target percentage	27%	44%
Weight	40%	60%
Cumulative Criterion-referenced target percentage (2025 x 40%) + (2026 x 60%)	37%
	Moderate progress toward targets

2026 Points awarded

2026 Progress toward improvement targets
Indicator		All Students (High school grades)			Lowest Performing Students (High school grades)
Indicator		Points earned	Total possible points	Weight %	Points earned	Total possible points	Weight %
Achievement	English language arts achievement	0	4	-	3	4	-
	Mathematics achievement	0	4	-	2	4	-
	Science achievement	0	4	-	3	4	-
	Achievement total	0	12	40.0	8	12	67.5
Growth	English language arts growth	2	4	-	2	4	-
	Mathematics growth	2	4	-	2	4	-
	Growth total	4	8	20.0	4	8	22.5
High school completion	Four-year cohort graduation rate	0	4	-	-	-	-
	Extended engagement rate	4	4	-	-	-	-
	Annual dropout rate	4	4	-	-	-	-
	High school completion total	8	12	20.0	-	-	-
Progress toward attaining English language proficiency	English language proficiency total	0	4	10.0	-	-	-
Additional indicators	Chronic absenteeism	0	4	-	0	4	-
	Advanced coursework completion	2	4	-	-	-	-
	Additional indicators total	2	8	10.0	0	4	10.0
Weighted total		2.6	10.0	-	6.3	10.3	-
Percentage of possible points		26%		-	61%		-
2026 Annual criterion-referenced target percentage		44%

2025 Points awarded

2025 Progress toward improvement targets
Indicator		All Students (High school grades)			Lowest Performing Students (High school grades)
Indicator		Points earned	Total possible points	Weight %	Points earned	Total possible points	Weight %
Achievement	English language arts achievement	0	4	-	0	4	-
	Mathematics achievement	2	4	-	2	4	-
	Science achievement	0	4	-	0	4	-
	Achievement total	2	12	40.0	2	12	67.5
Growth	English language arts growth	1	4	-	2	4	-
	Mathematics growth	2	4	-	2	4	-
	Growth total	3	8	20.0	4	8	22.5
High school completion	Four-year cohort graduation rate	4	4	-	-	-	-
	Extended engagement rate	0	4	-	-	-	-
	Annual dropout rate	0	4	-	-	-	-
	High school completion total	4	12	20.0	-	-	-
Progress toward attaining English language proficiency	English language proficiency total	4	4	10.0	-	-	-
Additional indicators	Chronic absenteeism	0	4	-	4	4	-
	Advanced coursework completion	2	4	-	-	-	-
	Additional indicators total	2	8	10.0	4	4	10.0
Weighted total		2.8	10.0	-	2.7	10.3	-
Percentage of possible points		28%		-	26%		-
2025 Annual criterion-referenced target percentage		27%

Student group percentile

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

Overall progress toward improvement targets

	2025	2026
Annual criterion-referenced target percentage	33%	29%
Weight	40%	60%
Cumulative Criterion-referenced target percentage (2025 x 40%) + (2026 x 60%)	31%
	Moderate progress toward targets

2026 Points awarded

2026 Progress toward improvement targets
Indicator		High Needs Student Group (High school grades)
Indicator		Points earned	Total possible points	Weight %
Achievement	English language arts achievement	1	4	-
	Mathematics achievement	0	4	-
	Science achievement	0	4	-
	Achievement total	1	12	47.5
Growth	English language arts growth	2	4	-
	Mathematics growth	2	4	-
	Growth total	4	8	22.5
High school completion	Four-year cohort graduation rate	0	4	-
	Extended engagement rate	4	4	-
	Annual dropout rate	4	4	-
	High school completion total	8	12	20.0
Progress toward attaining English language proficiency	English language proficiency total	-	-	-
Additional indicators	Chronic absenteeism	0	4	-
	Advanced coursework completion	1	4	-
	Additional indicators total	1	8	10.0
Weighted total		3.1	10.7	-
Percentage of possible points		29%		-
2026 Annual criterion-referenced target percentage		29%

2025 Points awarded

2025 Progress toward improvement targets
Indicator		High Needs Student Group (High school grades)
Indicator		Points earned	Total possible points	Weight %
Achievement	English language arts achievement	0	4	-
	Mathematics achievement	2	4	-
	Science achievement	1	4	-
	Achievement total	3	12	47.5
Growth	English language arts growth	2	4	-
	Mathematics growth	2	4	-
	Growth total	4	8	22.5
High school completion	Four-year cohort graduation rate	4	4	-
	Extended engagement rate	1	4	-
	Annual dropout rate	0	4	-
	High school completion total	5	12	20.0
Progress toward attaining English language proficiency	English language proficiency total	-	-	-
Additional indicators	Chronic absenteeism	0	4	-
	Advanced coursework completion	2	4	-
	Additional indicators total	2	8	10.0
Weighted total		3.5	10.7	-
Percentage of possible points		33%		-
2025 Annual criterion-referenced target percentage		33%

Detailed data for each indicator

English language arts achievement - MCAS average composite scaled score - High school
Group	2025 Achievement	2026 Achievement	Change	2026 Target	N	Points	Reason
All Students	480.1	478.9	-1.2	483.6	293	0	Path Forward: Declined
Lowest Performing	461.2	466.2	5.0	466.3	43	3	Path Forward: Met Target
High Needs	477.8	477.5	-0.3	482.1	253	1	Path Forward: No Change
English Learners and Former English Learners	462.5	466.1	3.6	466.0	117	3	Path Forward: Met Target
Low Income	478.4	477.9	-0.5	483.3	238	1	Path Forward: No Change
Students with Disabilities	464.8	466.4	1.6	468.0	49	2	Path Forward: Improved Below Target
American Indian or Alaska Native	-	-	-	-	-	-	-
Asian	-	-	-	-	-	-	-
Black or African American	-	-	-	-	13	-	-
Hispanic or Latino	478.9	477.8	-1.1	482.6	259	0	Path Forward: Declined
Multi-Race, Not Hispanic or Latino	-	-	-	-	3	-	-
Native Hawaiian or Other Pacific Islander	-	-	-	-	-	-	-
White	-	-	-	-	18	-	-

Mathematics achievement - MCAS average composite scaled score - High school
Group	2025 Achievement	2026 Achievement	Change	2026 Target	N	Points	Reason
All Students	480.9	479.5	-1.4	485.0	280	0	Path Forward: Declined
Lowest Performing	466.3	467.7	1.4	471.4	43	2	Path Forward: Improved Below Target
High Needs	479.5	478.6	-0.9	483.7	242	0	Path Forward: Declined
English Learners and Former English Learners	468.7	474.1	5.4	473.8	110	3	Path Forward: Met Target
Low Income	479.9	478.9	-1.0	483.7	228	0	Path Forward: Declined
Students with Disabilities	468.6	469.4	0.8	472.7	44	2	Path Forward: Improved Below Target
American Indian or Alaska Native	-	-	-	-	-	-	-
Asian	-	-	-	-	-	-	-
Black or African American	-	-	-	-	14	-	-
Hispanic or Latino	480.1	479.0	-1.1	483.9	245	0	Path Forward: Declined
Multi-Race, Not Hispanic or Latino	-	-	-	-	3	-	-
Native Hawaiian or Other Pacific Islander	-	-	-	-	-	-	-
White	-	-	-	-	18	-	-

Science achievement - MCAS average composite scaled score - High school
Group	2025 Achievement	2026 Achievement	Change	2026 Target	N	Points	Reason
All Students	480.5	475.9	-4.6	483.6	284	0	Path Forward: Declined
Lowest Performing	460.8	464.7	3.9	464.7	43	3	Path Forward: Met Target
High Needs	479.5	473.9	-5.6	482.8	245	0	Path Forward: Declined
English Learners and Former English Learners	468.5	464.8	-3.7	472.5	103	0	Path Forward: Declined
Low Income	480.2	474.4	-5.8	483.4	230	0	Path Forward: Declined
Students with Disabilities	468.8	462.1	-6.7	472.0	46	0	Recovery Path: Declined
American Indian or Alaska Native	-	-	-	-	-	-	-
Asian	-	-	-	-	-	-	-
Black or African American	-	-	-	-	13	-	-
Hispanic or Latino	479.5	474.8	-4.7	483.0	252	0	Path Forward: Declined
Multi-Race, Not Hispanic or Latino	-	-	-	-	3	-	-
Native Hawaiian or Other Pacific Islander	-	-	-	-	-	-	-
White	-	-	-	-	16	-	-

English language arts growth - High school
Group	2026 Mean SGP	N	Points	Reason
All Students	45.6	224	2	Typical Growth - Low
Lowest Performing	49.7	43	2	Typical Growth - Low
High Needs	46.4	188	2	Typical Growth - Low
English Learners and Former English Learners	49.9	68	2	Typical Growth - Low
Low Income	45.7	178	2	Typical Growth - Low
Students with Disabilities	47.4	36	2	Typical Growth - Low
American Indian or Alaska Native	-	-	-	-
Asian	-	-	-	-
Black or African American	-	12	-	-
Hispanic or Latino	46.0	194	2	Typical Growth - Low
Multi-Race, Not Hispanic or Latino	-	3	-	-
Native Hawaiian or Other Pacific Islander	-	-	-	-
White	-	15	-	-

Mathematics growth - High school
Group	2026 Mean SGP	N	Points	Reason
All Students	48.1	218	2	Typical Growth - Low
Lowest Performing	48.6	43	2	Typical Growth - Low
High Needs	48.3	182	2	Typical Growth - Low
English Learners and Former English Learners	52.8	63	3	Typical Growth - High
Low Income	48.6	172	2	Typical Growth - Low
Students with Disabilities	48.6	31	2	Typical Growth - Low
American Indian or Alaska Native	-	-	-	-
Asian	-	-	-	-
Black or African American	-	13	-	-
Hispanic or Latino	47.5	187	2	Typical Growth - Low
Multi-Race, Not Hispanic or Latino	-	2	-	-
Native Hawaiian or Other Pacific Islander	-	-	-	-
White	-	16	-	-

Four-year cohort graduation rate - High school
Group	2024 Rate (%)	2025 Rate (%)	Change	Target (%)	N	Points	Reason
All Students	82.1	78.2	-3.9	86.6	399	0	Declined
Lowest Performing	-	-	-	-	-	-	-
High Needs	81.2	76.7	-4.5	86.3	373	0	Declined
English Learners and Former English Learners	65.5	65.1	-0.4	71.1	172	1	No Change
Low Income	81.6	76.9	-4.7	86.9	364	0	Declined
Students with Disabilities	61.5	67.3	5.8	70.6	55	2	Improved Below Target
American Indian or Alaska Native	-	-	-	-	1	-	-
Asian	-	-	-	-	5	-	-
Black or African American	-	-	-	-	11	-	-
Hispanic or Latino	81.6	76.7	-4.9	88.0	352	0	Declined
Multi-Race, Not Hispanic or Latino	-	-	-	-	4	-	-
Native Hawaiian or Other Pacific Islander	-	-	-	-	-	-	-
White	-	-	-	-	26	-	-

Extended engagement rate - High school
Group	2023 Rate (%)	2024 Rate (%)	Change	Target (%)	N	Points	Reason
All Students	81.0	88.0	7.0	83.7	358	4	Exceeded Target
Lowest Performing	-	-	-	-	-	-	-
High Needs	80.3	87.5	7.2	83.9	336	4	Exceeded Target
English Learners and Former English Learners	66.4	75.2	8.8	73.4	113	4	Exceeded Target
Low Income	81.4	88.0	6.6	85.7	332	4	Exceeded Target
Students with Disabilities	78.8	78.8	0.0	85.8	52	1	No Change
American Indian or Alaska Native	-	-	-	-	1	-	-
Asian	-	-	-	-	5	-	-
Black or African American	-	-	-	-	18	-	-
Hispanic or Latino	79.9	87.7	7.8	84.0	316	4	Exceeded Target
Multi-Race, Not Hispanic or Latino	-	-	-	-	-	-	-
Native Hawaiian or Other Pacific Islander	-	-	-	-	-	-	-
White	-	-	-	-	18	-	-

Annual dropout rate - High school
Group	2024 Rate (%)	2025 Rate (%)	Change	Target (%)	N	Points	Reason
All Students	4.6	3.3	-1.3	4.1	1,643	4	Exceeded Target
Lowest Performing	-	-	-	-	-	-	-
High Needs	5.2	3.6	-1.6	4.6	1,398	4	Exceeded Target
English Learners and Former English Learners	10.1	6.0	-4.1	9.0	569	4	Exceeded Target
Low Income	4.9	3.5	-1.4	4.4	1,279	4	Exceeded Target
Students with Disabilities	2.8	2.5	-0.3	2.5	278	3	Met Target
American Indian or Alaska Native	-	-	-	-	2	-	-
Asian	-	-	-	-	14	-	-
Black or African American	-	-	-	-	72	-	-
Hispanic or Latino	4.9	3.4	-1.5	4.4	1,456	4	Exceeded Target
Multi-Race, Not Hispanic or Latino	-	-	-	-	14	-	-
Native Hawaiian or Other Pacific Islander	-	-	-	-	-	-	-
White	-	-	-	-	85	-	-

Progress toward attaining English language proficiency - High school
Group	2025 Rate (%)	2026 Rate (%)	Change	Target	N	Points	Reason
All Students	16.0	9.0	-7.0	17.5	423	0	Declined
Lowest Performing	-	-	-	-	-	-	-
High Needs	-	-	-	-	-	-	-
English Learners and Former English Learners	16.0	9.0	-7.0	17.5	423	0	Declined
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 - High school
Group	2025 Rate (%)	2026 Rate (%)	Change	Target	N	Points	Reason
All Students	48.1	52.5	4.4	45.1	1,509	0	Declined
Lowest Performing	35.8	46.5	10.7	28.9	43	0	Declined
High Needs	50.5	55.5	5.0	46.9	1,317	0	Declined
English Learners and Former English Learners	52.1	56.3	4.2	47.7	632	0	Declined
Low Income	50.4	55.2	4.8	46.4	1,224	0	Declined
Students with Disabilities	60.0	55.1	-4.9	56.2	207	4	Exceeded Target
American Indian or Alaska Native	-	-	-	-	2	-	-
Asian	-	-	-	-	6	-	-
Black or African American	-	-	-	-	64	-	-
Hispanic or Latino	49.4	53.8	4.4	45.5	1,351	0	Declined
Multi-Race, Not Hispanic or Latino	-	-	-	-	10	-	-
Native Hawaiian or Other Pacific Islander	-	-	-	-	-	-	-
White	-	-	-	-	76	-	-

Advanced coursework completion - High school
Group	2025 Rate (%)	2026 Rate (%)	Change	Target	N	Points	Reason
All Students	65.0	65.9	0.9	69.8	736	2	Improved Below Target
Lowest Performing	-	-	-	-	-	-	-
High Needs	62.0	62.0	0.0	67.1	627	1	No Change
English Learners and Former English Learners	46.2	49.8	3.6	53.8	255	2	Improved Below Target
Low Income	63.0	62.9	-0.1	68.3	579	1	No Change
Students with Disabilities	27.6	28.6	1.0	33.1	119	2	Improved Below Target
American Indian or Alaska Native	-	-	-	-	1	-	-
Asian	-	-	-	-	5	-	-
Black or African American	-	-	-	-	33	-	-
Hispanic or Latino	63.8	65.0	1.2	70.3	655	2	Improved Below Target
Multi-Race, Not Hispanic or Latino	-	-	-	-	6	-	-
Native Hawaiian or Other Pacific Islander	-	-	-	-	-	-	-
White	-	-	-	-	36	-	-

Assessment participation - All students
Group	English language arts					Mathematics					Science
Group	Enrolled	Assessed	%	Met Target?	Years in Rate	Enrolled	Assessed	%	Met Target?	Years in Rate	Enrolled	Assessed	%	Met Target?	Years in Rate
All Students	333	301	91	No	2	328	290	90	No	2	333	327	98	Yes	1

Assessment participation - Student Group
Group	English language arts		Mathematics		Science		Overall
Group	Enrolled	Assessed	Enrolled	Assessed	Enrolled	Assessed	Total Enrolled	Total Assessed	%	Met Target?	Years in Rate
High Needs	290	261	286	251	290	285	866	797	92	No	1
English Learners and Former English Learners	136	122	133	116	136	134	405	372	93	No	2
Low Income	271	245	267	236	271	266	809	747	92	No	1
Students with Disabilities	54	49	53	44	54	52	161	145	90	No	1
American Indian or Alaska Native	-	-	-	-	-	-	-	-	-	-	-
Asian	-	-	-	-	-	-	-	-	-	-	-
Black or African American	16	13	16	15	16	16	48	-	-	-	-
Hispanic or Latino	296	267	291	254	296	290	883	811	92	No	1
Multi-Race, Not Hispanic or Latino	3	3	3	3	3	3	9	-	-	-	-
Native Hawaiian or Other Pacific Islander	-	-	-	-	-	-	-	-	-	-	-
White	18	18	18	18	18	18	54	-	-	-	-

About this report

About the Data

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.

Resources

Interpretive Materials

Glossary of Accountability Terms