Enrollment
531
Massachusetts · 2024-25 NCES data
Elementary school (grades K-5) · Billerica, MA
Locke Middle
Federal NCES profile for Locke Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 45/100.
2024-25 NCES dataElementary school (grades K-5)NCES 250267000182
👥 S:T ratio 53
🌟 Gifted program 30
🎓 Counselors 47
📋 Attendance 52
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Locke Middle earns 45/100 on the Resource Investment Index, with class sizes near the Massachusetts median.
- #2 of 6
- elementary schools in Billerica · Resource Index
- 45
- Resource Index · Typical
- 11.8:1
- students per teacher
- 531
- students enrolled
Locke Middle has class sizes near the Massachusetts median. Computed live against every Massachusetts school reporting to NCES.
By Resource Investment Index, Locke Middle ranks #2 of 6 elementary schools in Billerica, MA.
School address
District: Billerica · Massachusetts
NCES ID 250267000182 Verify on NCES CCD record →
Teachers (FTE)
45.0
Federal CCD staff survey
Students per teacher
11.8:1
vs 12.3:1 Massachusetts avg
-4% vs state
Student-teacher ratio in context
How Locke Middle compares with Massachusetts and U.S. medians
What stands out at Locke Middle
Locke Middle is a mid-sized elementary school in Billerica, Massachusetts, enrolling 531 students.
At 11.8:1, its student-teacher ratio sits close to the Massachusetts median, within a few percentage points of the 12.3:1 state norm, neither notably crowded nor notably small.
Enrollment of 531 puts it in the larger third of Massachusetts schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 1,831 scored Massachusetts schools.
Its student body is led by White (73%) and Asian (10%) (diversity index 44/100).
Counselor coverage runs a bit thin, about 266 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Attendance runs somewhat below the norm, with 19.4% of students chronically absent per the 2021-22 civil-rights collection.
Among Billerica's elementary schools, it stands alongside Marshall Middle School (596 students): Locke Middle is smaller than that campus by headcount and runs leaner classes (11.8:1 vs 12.2:1).
Billerica also operates Billerica Memorial High School (1,816 students) and Marshall Middle School (596 students) alongside Locke Middle.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Locke Middle compares
Locke Middle on the metrics families compare, against Massachusetts and U.S. means.
| Metric | This school | vs Massachusetts | Massachusetts avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 11.8:1 | ▼ 4% | 12.3:1 | 15.7:1 |
| Enrollment | 531 | top 33% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
11.8:1
Leaner classes than 77% of US schools, among the more generously staffed nationally.
531
Bigger than 65% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
11.8:1
students per teacher
- 4% below state mean
Top 48% in Massachusetts - lower ratio than 52% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
19.4%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$20,891
per pupil, district-wide
- below Massachusetts avg of $22,458
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors2.0 FTE
Per 266 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 9 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 1.7 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 73.4%
Asian 9.8%
Hispanic or Latino 8.7%
Two or More 5.3%
African American 2.8%
Largest group: White at 73.4% of enrollment.
Student-body diversity index 44.0/100
Simpson diversity index - at 44.0, Locke Middle is less mixed than the Massachusetts school average of 47.3.
Programs
Funding & spending
District-wide per-pupil expenditure for Billerica, which includes Locke Middle.
$20,891
Per student
-7%
vs Massachusetts
Avg $22,458
+26%
vs U.S.
Avg $16,593
Revenue mix
Local 58.5%
State 33.9%
Federal 7.7%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Locke Middle Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Billerica Memorial High School | Larger | No free-lunch data | Higher S:T ratio |
| Marshall Middle School | Similar size | No free-lunch data | Similar S:T ratio |
| Thomas Ditson | Similar size | No free-lunch data | Higher S:T ratio |
| Parker | Similar size | No free-lunch data | Higher S:T ratio |
| Hajjar Elementary | Similar size | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Locke Middle's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,816
- Students per teacher
- 14.2:1
- Resource Index
- 43/100
- Enrollment
- 596
- Students per teacher
- 12.2:1
- Resource Index
- 50/100
- Enrollment
- 542
- Students per teacher
- 16.4:1
- Resource Index
- 40/100
- Enrollment
- 446
- Students per teacher
- 14.4:1
- Resource Index
- 41/100
- Enrollment
- 401
- Students per teacher
- 15.4:1
- Resource Index
- 39/100
Similar elementary schools in Billerica
5 comparable elementary schools (grades K-5) serving the same city.
Marshall Middle School
Standard public school
596 students 12.2:1 students per teacher
Thomas Ditson
Standard public school
542 students 16.4:1 students per teacher
Parker
Standard public school
446 students 14.4:1 students per teacher
Hajjar Elementary
Standard public school
401 students 15.4:1 students per teacher
John F Kennedy
Standard public school
330 students 15.7:1 students per teacher
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of Massachusetts, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~531 students)
Similar student-teacher ratio (~11.8:1)
Next steps
Verify locally before acting on Locke Middle's federal record.
- Compare Locke Middle against another school. Compare schools
- Billerica's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Locke Middle
How many students attend Locke Middle?
Locke Middle has 531 students enrolled. It is an elementary school in Billerica, MA.
What is the student-teacher ratio at Locke Middle?
The student-teacher ratio at Locke Middle is 11.8:1, which is 4% lower than the Massachusetts average of 12.3:1 and 25% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What is the racial and ethnic makeup of Locke Middle?
The largest demographic group at Locke Middle is White at 73.4% of enrollment, in Billerica, MA.
What is the Resource Investment Index for Locke Middle?
Locke Middle has a Resource Investment Index of 45/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Locke Middle rank among elementary schools in Billerica?
By Resource Investment Index, Locke Middle ranks #2 of 6 elementary schools in Billerica, MA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Billerica on the city page.
Is Locke Middle a good school?
Locke Middle earns 45/100 on the Resource Investment Index, with class sizes near the Massachusetts median. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Billerica?
Besides Locke Middle, Billerica also operates Billerica Memorial High School (1,816 students), Marshall Middle School (596 students), and Thomas Ditson (542 students). See the Billerica district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.