Massachusetts School and District Profiles

Ottoson Middle

Districts
Schools

2026

Accountability Report

2026 Official Accountability Report - Ottoson Middle

Organization Information

DISTRICT NAME
Arlington (00100000)

TITLE I STATUS
Non-Title I School

SCHOOL
Ottoson Middle (00100410)

GRADES SERVED
07,08

REGION
Coastal

FEDERAL DESIGNATION
-

Accountability Information

Overall classification

Not requiring assistance or intervention

Reason for classification

Meeting or exceeding targets

Progress toward improvement targets	Accountability percentile
88% - Meeting or exceeding targets	98

OVERALL RESULTS
STUDENT GROUP RESULTS
DETAILED DATA FOR EACH INDICATOR

Overall progress toward improvement targets

	2025	2026
Annual criterion-referenced target percentage	90%	86%
Weight	40%	60%
Cumulative Criterion-referenced target percentage (2025 x 40%) + (2026 x 60%)	88%
	Meeting or exceeding targets

2026 Points awarded

2026 Progress toward improvement targets
Indicator		All Students (Non-high school grades)			Lowest Performing Students (Non-high school grades)
Indicator		Points earned	Total possible points	Weight %	Points earned	Total possible points	Weight %
Achievement	English language arts achievement	4	4	-	3	4	-
	Mathematics achievement	4	4	-	3	4	-
	Science achievement	4	4	-	-	-	-
	Achievement total	12	12	60.0	6	8	67.5
Growth	English language arts growth	4	4	-	3	4	-
	Mathematics growth	4	4	-	4	4	-
	Growth total	8	8	20.0	7	8	22.5
High school completion	Four-year cohort graduation rate	-	-	-	-	-	-
	Extended engagement rate	-	-	-	-	-	-
	Annual dropout rate	-	-	-	-	-	-
	High school completion total	-	-	-	-	-	-
Progress toward attaining English language proficiency	English language proficiency total	4	4	10.0	-	-	-
Additional indicators	Chronic absenteeism	3	4	-	0	4	-
	Advanced coursework completion	-	-	-	-	-	-
	Additional indicators total	3	4	10.0	0	4	10.0
Weighted total		9.5	9.6	-	5.6	7.6	-
Percentage of possible points		99%		-	74%		-
2026 Annual criterion-referenced target percentage		86%

2025 Points awarded

2025 Progress toward improvement targets
Indicator		All Students (Non-high school grades)			Lowest Performing Students (Non-high school grades)
Indicator		Points earned	Total possible points	Weight %	Points earned	Total possible points	Weight %
Achievement	English language arts achievement	4	4	-	4	4	-
	Mathematics achievement	4	4	-	3	4	-
	Science achievement	4	4	-	-	-	-
	Achievement total	12	12	60.0	7	8	67.5
Growth	English language arts growth	4	4	-	4	4	-
	Mathematics growth	3	4	-	3	4	-
	Growth total	7	8	20.0	7	8	22.5
High school completion	Four-year cohort graduation rate	-	-	-	-	-	-
	Extended engagement rate	-	-	-	-	-	-
	Annual dropout rate	-	-	-	-	-	-
	High school completion total	-	-	-	-	-	-
Progress toward attaining English language proficiency	English language proficiency total	4	4	10.0	-	-	-
Additional indicators	Chronic absenteeism	1	4	-	2	4	-
	Advanced coursework completion	-	-	-	-	-	-
	Additional indicators total	1	4	10.0	2	4	10.0
Weighted total		9.1	9.6	-	6.5	7.6	-
Percentage of possible points		95%		-	86%		-
2025 Annual criterion-referenced target percentage		90%

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	52%	59%
Weight	40%	60%
Cumulative Criterion-referenced target percentage (2025 x 40%) + (2026 x 60%)	57%
	Substantial progress toward targets

2026 Points awarded

2026 Progress toward improvement targets
Indicator		High Needs Student Group (Non-high school grades)
Indicator		Points earned	Total possible points	Weight %
Achievement	English language arts achievement	3	4	-
	Mathematics achievement	1	4	-
	Science achievement	3	4	-
	Achievement total	7	12	67.5
Growth	English language arts growth	3	4	-
	Mathematics growth	3	4	-
	Growth total	6	8	22.5
High school completion	Four-year cohort graduation rate	-	-	-
	Extended engagement rate	-	-	-
	Annual dropout rate	-	-	-
	High school completion total	-	-	-
Progress toward attaining English language proficiency	English language proficiency total	-	-	-
Additional indicators	Chronic absenteeism	0	4	-
	Advanced coursework completion	-	-	-
	Additional indicators total	0	4	10.0
Weighted total		6.1	10.3	-
Percentage of possible points		59%		-
2026 Annual criterion-referenced target percentage		59%

2025 Points awarded

2025 Progress toward improvement targets
Indicator		High Needs Student Group (Non-high school grades)
Indicator		Points earned	Total possible points	Weight %
Achievement	English language arts achievement	3	4	-
	Mathematics achievement	2	4	-
	Science achievement	0	4	-
	Achievement total	5	12	67.5
Growth	English language arts growth	4	4	-
	Mathematics growth	3	4	-
	Growth total	7	8	22.5
High school completion	Four-year cohort graduation rate	-	-	-
	Extended engagement rate	-	-	-
	Annual dropout rate	-	-	-
	High school completion total	-	-	-
Progress toward attaining English language proficiency	English language proficiency total	-	-	-
Additional indicators	Chronic absenteeism	4	4	-
	Advanced coursework completion	-	-	-
	Additional indicators total	4	4	10.0
Weighted total		5.4	10.3	-
Percentage of possible points		52%		-
2025 Annual criterion-referenced target percentage		52%

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	517.5	516.7	-0.8	518.9	948	4	Path Forward: Exceeded Target
Lowest Performing	486.1	489.1	3.0	490.5	106	3	Recovery Path: Met Target
High Needs	495.5	494.7	-0.8	497.8	266	3	Recovery Path: Met Target
English Learners and Former English Learners	494.2	491.5	-2.7	496.7	65	0	Recovery Path: Declined
Low Income	494.2	490.9	-3.3	496.8	107	0	Recovery Path: Declined
Students with Disabilities	490.8	490.8	0.0	493.2	168	3	Path Forward: Met Target
American Indian or Alaska Native	-	-	-	-	-	-	-
Asian	523.1	519.9	-3.2	525.2	95	4	Path Forward: Exceeded Target
Black or African American	498.5	489.1	-9.4	500.7	34	0	Path Forward: Declined
Hispanic or Latino	504.0	501.0	-3.0	507.1	72	3	Recovery Path: Met Target
Multi-Race, Not Hispanic or Latino	520.4	519.1	-1.3	521.8	96	4	Path Forward: Exceeded Target
Native Hawaiian or Other Pacific Islander	-	-	-	-	-	-	-
White	518.6	519.1	0.5	520.1	651	4	Path Forward: Exceeded Target

Mathematics achievement - MCAS average composite scaled score - Non-high school
Group	2025 Achievement	2026 Achievement	Change	2026 Target	N	Points	Reason
All Students	513.9	515.6	1.7	515.4	953	4	Path Forward: Exceeded Target
Lowest Performing	486.0	490.9	4.9	490.8	106	3	Recovery Path: Met Target
High Needs	497.1	497.1	0.0	498.4	270	1	Recovery Path: No Change
English Learners and Former English Learners	497.7	500.4	2.7	500.7	66	3	Path Forward: Met Target
Low Income	494.0	492.2	-1.8	496.6	107	0	Recovery Path: Declined
Students with Disabilities	492.9	492.9	0.0	496.1	171	3	Path Forward: Met Target
American Indian or Alaska Native	-	-	-	-	-	-	-
Asian	523.2	525.3	2.1	526.2	97	4	Path Forward: Exceeded Target
Black or African American	490.2	485.4	-4.8	493.2	34	0	Path Forward: Declined
Hispanic or Latino	502.3	502.1	-0.2	505.2	72	3	Path Forward: Met Target
Multi-Race, Not Hispanic or Latino	517.1	520.8	3.7	518.6	96	4	Path Forward: Exceeded Target
Native Hawaiian or Other Pacific Islander	-	-	-	-	-	-	-
White	514.1	516.5	2.4	515.8	654	4	Path Forward: Exceeded Target

Science achievement - MCAS average composite scaled score - Non-high school
Group	2025 Achievement	2026 Achievement	Change	2026 Target	N	Points	Reason
All Students	512.9	515.6	2.7	514.8	442	4	Recovery Path: Exceeded Target
Lowest Performing	-	-	-	-	104	-	-
High Needs	495.9	499.1	3.2	499.4	128	3	Path Forward: Met Target
English Learners and Former English Learners	494.9	497.8	2.9	499.1	29	3	Path Forward: Met Target
Low Income	490.5	492.4	1.9	492.9	48	3	Recovery Path: Met Target
Students with Disabilities	493.0	496.1	3.1	497.2	83	3	Path Forward: Met Target
American Indian or Alaska Native	-	-	-	-	-	-	-
Asian	520.6	515.3	-5.3	522.8	41	4	Path Forward: Exceeded Target
Black or African American	-	-	-	-	13	-	-
Hispanic or Latino	501.3	502.7	1.4	505.9	34	3	Path Forward: Met Target
Multi-Race, Not Hispanic or Latino	-	-	-	-	43	-	-
Native Hawaiian or Other Pacific Islander	-	-	-	-	-	-	-
White	512.9	517.4	4.5	514.4	311	4	Recovery Path: Exceeded Target

English language arts growth - Non-high school
Group	2026 Mean SGP	N	Points	Reason
All Students	62.7	913	4	Exceeded Typical Growth
Lowest Performing	59.2	106	3	Typical Growth - High
High Needs	56.6	251	3	Typical Growth - High
English Learners and Former English Learners	65.0	53	4	Exceeded Typical Growth
Low Income	55.1	100	3	Typical Growth - High
Students with Disabilities	53.6	164	3	Typical Growth - High
American Indian or Alaska Native	-	-	-	-
Asian	63.4	88	4	Exceeded Typical Growth
Black or African American	51.5	31	3	Typical Growth - High
Hispanic or Latino	59.6	68	3	Typical Growth - High
Multi-Race, Not Hispanic or Latino	64.0	92	4	Exceeded Typical Growth
Native Hawaiian or Other Pacific Islander	-	-	-	-
White	63.3	634	4	Exceeded Typical Growth

Mathematics growth - Non-high school
Group	2026 Mean SGP	N	Points	Reason
All Students	61.6	925	4	Exceeded Typical Growth
Lowest Performing	60.6	106	4	Exceeded Typical Growth
High Needs	57.8	262	3	Typical Growth - High
English Learners and Former English Learners	67.3	61	4	Exceeded Typical Growth
Low Income	58.3	105	3	Typical Growth - High
Students with Disabilities	55.1	167	3	Typical Growth - High
American Indian or Alaska Native	-	-	-	-
Asian	64.9	90	4	Exceeded Typical Growth
Black or African American	50.9	33	3	Typical Growth - High
Hispanic or Latino	56.9	70	3	Typical Growth - High
Multi-Race, Not Hispanic or Latino	66.3	94	4	Exceeded Typical Growth
Native Hawaiian or Other Pacific Islander	-	-	-	-
White	61.5	638	4	Exceeded Typical Growth

Progress toward attaining English language proficiency - Non-high school
Group	2025 Rate (%)	2026 Rate (%)	Change	Target	N	Points	Reason
All Students	82.1	75.0	-7.1	87.5	24	4	Exceeded Target
Lowest Performing	-	-	-	-	-	-	-
High Needs	-	-	-	-	-	-	-
English Learners and Former English Learners	82.1	75.0	-7.1	87.5	24	4	Exceeded 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	2025 Rate (%)	2026 Rate (%)	Change	Target	N	Points	Reason
All Students	9.9	8.6	-1.3	8.8	987	3	Met Target
Lowest Performing	17.4	19.8	2.4	14.1	106	0	Declined
High Needs	14.7	16.7	2.0	12.6	293	0	Declined
English Learners and Former English Learners	12.9	9.9	-3.0	9.9	71	3	Met Target
Low Income	19.1	20.5	1.4	14.8	117	0	Declined
Students with Disabilities	15.8	18.1	2.3	13.3	182	0	Declined
American Indian or Alaska Native	-	-	-	-	-	-	-
Asian	6.7	4.9	-1.8	4.6	102	4	Exceeded Target
Black or African American	19.4	21.6	2.2	16.4	37	0	Declined
Hispanic or Latino	11.9	14.9	3.0	7.7	74	0	Declined
Multi-Race, Not Hispanic or Latino	10.8	4.1	-6.7	9.7	98	4	Exceeded Target
Native Hawaiian or Other Pacific Islander	-	-	-	-	-	-	-
White	9.7	8.4	-1.3	8.5	676	3	Met Target

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	974	959	98	Yes	1	978	966	99	Yes	1	453	446	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	286	274	288	279	135	131	709	684	96	Yes	1
English Learners and Former English Learners	71	69	72	72	33	32	176	173	98	Yes	1
Low Income	115	111	115	112	50	50	280	273	98	Yes	1
Students with Disabilities	177	170	179	173	88	84	444	427	96	Yes	1
American Indian or Alaska Native	-	-	-	-	-	-	-	-	-	-	-
Asian	99	98	101	101	42	42	242	241	100	Yes	1
Black or African American	36	35	37	36	14	13	87	84	97	Yes	1
Hispanic or Latino	73	73	73	73	35	34	181	180	99	Yes	1
Multi-Race, Not Hispanic or Latino	97	96	97	96	43	43	237	235	99	Yes	1
Native Hawaiian or Other Pacific Islander	-	-	-	-	-	-	-	-	-	-	-
White	669	657	670	660	319	314	1,658	1,631	98	Yes	1

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