Math
30%Grades 6 & 8 · Proficient or Advanced
Public middle school
Lorbeer Middle
A closer look at learning, opportunity and fit.
45% of tested students are Proficient or Advanced in English and 30% in math. Explore the evidence alongside the opportunities your child would use.
Data sources · Methodology · State tests: 2025
Contact
English
45%Grades 6 & 8 · Proficient or Advanced
Students
688Total enrollment
Chronic absence
—Students absent 10% or more of school days
What are you trying to decide?
The overall score is a starting point.
Look at subject results, trends and student groups, then consider the opportunities your child would use.
View school performance →Start with your child’s daily experience.
Explore teaching, coursework and student-group results. A schoolwide average cannot predict an individual experience.
Explore student experience →Confirm the enrollment route.
Check the address, grade and enrollment requirements directly with the district or school.
Check attendance and enrollment →Compare the options you can access.
Use comparable evidence alongside entry requirements, cost and location.
Compare nearby schools →Academic performance
What do the results tell us?
2025 results · Grades 6 & 8 · weighted by students tested within each subject.
Proficient or Advanced combines Levels 3 and 4, formerly Standard Met and Standard Exceeded. California changed the names for 2025–26; the cut scores did not. About the labels →
Share at Proficient or Advanced
● Math┄ English
Gaps in the lines mark years without annual results.
Exact annual results
| Year | Math | English |
|---|---|---|
| 2019 | 34% | 54% |
| 2022 | 26% | 50% |
| 2023 | 21% | 45% |
| 2024 | 25% | 43% |
| 2025 | 30% | 45% |
Each year describes that year’s tested students. Changes between years do not follow the same children over time. Cohort-growth evidence, when available, is labeled separately below.
How achievement is distributed
AdvancedStandard Exceeded
20%ProficientStandard Met
10%DevelopingStandard Nearly Met
20%MinimalStandard Not Met
50%AdvancedStandard Exceeded
19%ProficientStandard Met
26%DevelopingStandard Nearly Met
24%MinimalStandard Not Met
31%Achievement-level percentages are not percentiles. “Developing” here is a test achievement level, separate from the SchoolScope performance band with the same name.
Annual results and the full academic record
Where students land · CAASPP 2024–25
Where its students land
ELA47% met or exceeded
Exceeded 19%Met 28%Nearly Met 24%Not Met 28%
Math31% met or exceeded
Exceeded 18%Met 12%Nearly Met 24%Not Met 46%
Exceeded Met Nearly Met Not Met
California middle schools · average17% exceeded · 40% met or exceeded
California’s growth results and student groups
State growth model · CDE growth model 2024–25
California's own growth model splits here — the 31st percentile in reading against the 9th in math, among middle schools.
Context — never part of the Scope Score
California runs its own growth model — it follows individual children in grades 4 through 8 and compares each one against a prediction from their own prior scores. On that measure this school sits well below the middle of California middle schools in reading, and the 9th in math. We show it; we don't score it.
— pts vs expected is scale-score points above or below what California's model predicted for these same children from their own prior-year scores. It is not a percentage and not a percent of anything. A typical California middle school lands at −1 in reading, and the middle half of them fall between −8 and +6 — the spread is wide, so read the rank, not the sign. CDE blends two consecutive years into each published figure, so adjacent years share input data and no year-over-year trend can honestly be drawn from them. It covers grades 4-8 only, and it is not part of the Scope Score — we assessed it and left it out: it tracks school demographics roughly three times as strongly as our own growth measure does, and one published year is not enough to test how stable it is.
California's growth model, ranked against the schools it scores
State model · readingmatched students, grades 4-8California growth model, reading: −4 scale-score points versus the state's expectation, 31st percentile of 7,519 reported schools.31st pctile · −4 pts
State model · mathmatched students, grades 4-8California growth model, math: −17 scale-score points versus the state's expectation, 9th percentile of 7,518 reported schools.9th pctile · −17 pts
this school| the tick is the middle of the California field
Students & opportunity
Who shares in the school’s results?
Who it works for · CAASPP 2024–25
Low-income students here meet the ELA standard ahead of the same group statewide.
At Lorbeer Middle in Diamond Bar, 43.5% of low-income students met or exceeded the ELA standard in 2025, compared to 34.6% district-wide and 38.2% statewide. Lorbeer Middle outperforms its district average for low-income students by 8.9 percentage points in ELA. Other subgroups: Low-Income students (25.1% Math proficient); Hispanic students (40.9% ELA proficient). The largest proficiency gap is 46.0 percentage points for english learner students. Data source: California Department of Education, CAASPP 2024-25. 493 students tested.
Met or exceeded · reading and math combined
All students at this school: 39% met or exceeded
All StudentsAll Students: this school 39%, district —, state 40%39%
Socioeconomically DisadvantagedSocioeconomically Disadvantaged: this school 34%, district 28%, state 32%34% · −5 vs school
Hispanic/LatinoHispanic/Latino: this school 31%, district 28%, state 32%31% · −8 vs school
FemaleFemale: this school 41%, district 32%, state 44%41% · +2 vs school
MaleMale: this school 37%, district 30%, state 42%37% · −2 vs school
Students with DisabilitiesStudents with Disabilities: this school 8%, district 8%, state 15%8% · −31 vs school
AsianAsian: this school 71%, district 69%, state 72%71% · +32 vs school
English LearnersEnglish Learners: this school 6%, district 7%, state 11%6% · −33 vs school
HomelessHomeless: this school 20%, district 22%, state 22%20% · −19 vs school
Two or More RacesTwo or More Races: this school 59%, district 40%, state 56%59% · +20 vs school
WhiteWhite: this school 48%, district 40%, state 56%48% · +9 vs school
Black/African AmericanBlack/African American: this school 27%, district 20%, state 26%27% · −12 vs school
FilipinoFilipino: this school 75%, district 61%, state 65%75% · +36 vs school
American Indian/Alaska NativeAmerican Indian/Alaska Native: too few students to report‹11
Pacific IslanderPacific Islander: too few students to report‹11
Foster YouthFoster Youth: too few students to report‹11
this school district, same group California, same group
ShowHide Student-group results by grade
Student-group results by grade
Results compare different grade groups in the same year, relative to the lowest tested grade. They do not track the same children over time. Groups with fewer than 10 tested students per grade are not shown.
ShowHide California's growth model by student group
The state's growth model, by student group
California follows these children individually and predicts each one's score from their own prior year. Each row is read against the same group at a typical California middle school — not against zero, and not against this school's all-students figure, because the state's expectation already differs by group.
Reading
Low-income students477 studentsLow-income students, reading: −7 scale-score points versus expectation, against −3 for the same group at a typical California middle school, 477 students.−7 pts · −4 vs typical
Hispanic or Latino students473 studentsHispanic or Latino students, reading: −9 scale-score points versus expectation, against −2 for the same group at a typical California middle school, 473 students.−9 pts · −7 vs typical
English Only423 studentsEnglish Only, reading: −2 scale-score points versus expectation, against 0 for the same group at a typical California middle school, 423 students.−2 pts · −2 vs typical
English Learner146 studentsEnglish Learner, reading: −20 scale-score points versus expectation, against −5 for the same group at a typical California middle school, 146 students.−20 pts · −15 vs typical
Recently reclassified96 studentsRecently reclassified, reading: −16 scale-score points versus expectation, against +2 for the same group at a typical California middle school, 96 students.−16 pts · −18 vs typical
Math
Low-income students477 studentsLow-income students, math: −21 scale-score points versus expectation, against −5 for the same group at a typical California middle school, 477 students.−21 pts · −16 vs typical
Hispanic or Latino students472 studentsHispanic or Latino students, math: −25 scale-score points versus expectation, against −6 for the same group at a typical California middle school, 472 students.−25 pts · −19 vs typical
English Only423 studentsEnglish Only, math: −19 scale-score points versus expectation, against −3 for the same group at a typical California middle school, 423 students.−19 pts · −16 vs typical
English Learner146 studentsEnglish Learner, math: −17 scale-score points versus expectation, against −3 for the same group at a typical California middle school, 146 students.−17 pts · −14 vs typical
Recently reclassified96 studentsRecently reclassified, math: −22 scale-score points versus expectation, against −1 for the same group at a typical California middle school, 96 students.−22 pts · −21 vs typical
this school typical California middle school, same group| the centre tick is 0 = as predicted
— 4 more groups are reported here with between 11 and 29 students. We hold those back on purpose: at that size the figure swings about 17 points on its own, and a quarter of such groups land past the state's top or bottom cut point by chance alone. They are listed with their student counts in the data appendix. — A group not listed at all had fewer than 11 students with a growth score, so California published nothing for it here. That is a privacy protection, not a judgment about those students. — Context only. None of this enters the Scope Score.
The daily experience
What is it like to be a student here?
Students per teacher
Student–teacher ratio is a schoolwide staffing measure, not an average class size.
Teacher experience
Average teacher experience in the published staffing record. It does not measure individual teacher effectiveness.
Chronically absent
The share of students absent for at least 10% of their enrolled school days. Attendance reflects both school and out-of-school circumstances.
The people teaching · CDE staffing 2024–25
About 25 students for every teacher here.
Context — never part of the Scope Score
Students per teacher25 · district 22
Teaching staff29 teachers
Avg. experience16.0 years
Fully credentialed81%
First-year teachers14%
PrincipalCarlos Aguirre Jr.
ShowHide what the district pays
Teacher salary schedule$59,841 – $127,299
Principal salary$150,245 – $167,904
Superintendent salary$297,432
Pay is set by the district, not the school.
Resources & neighborhood
What sits behind the school experience?
Explore school spending and the district budget
What gets spent · FY 2024–25
It spends $20,875 per student, more than the California average.
Context — never part of the Scope Score
These measure different things: this figure is spending attributed to this campus, while district-wide figures also include central administration, districtwide programs, and the state's pension contributions made on the district's behalf — costs that never get assigned to a single school. The district number runs higher at nearly every school, not just this one.
$393 per student arrives as federal Title funding — a measure of concentrated need, not school quality.
The district's current expense of education per student, from CDE's annual SACS filing — the freshest district spending figure the state publishes.
Per-pupil spendingPer-pupil spending: $20,875, CA average $14,491$20,875 · spent at this school
Federal share$393 per student
District current expense · FY 2024–25$24,467 per student
This schoolDistrictCalifornia
Where the district's dollars go · FY 2024–25 · CDE SACS
Instruction 60%Instruction support 15%Student services 10%Administration 6%Buildings & maintenance 9%
District-level, from the district's own SACS general-ledger filing — school-by-school breakdowns aren't published by the state.
ShowHide the district's spending year by year
district detail, 2016–2020 — the newest published
2020$15,804 per pupil
2019$14,909 per pupil
2018$15,089 per pupil
2017$14,936 per pupil
2016$13,497 per pupil
Source: NCES F-33 · Full district breakdown →
The neighborhood · ACS 2024
Two-thirds of students here qualify for free or reduced lunch, versus three in five statewide.
Context — never part of the Scope Score
Worth knowing
On the state's science test (CAST), 28% met or exceeded the standard — science is tested in grades 5 and 8 and once in high school, and it never enters the Scope Score.
Hispanic or Latino73.4% · district 84.4% · CA 56.1%
White4.7% · district 3.2% · CA 19.9%
Asian9.9% · district 4.7% · CA 10.2%
Black3.6% · district 3.9% · CA 4.8%
Other8.4% · district 3.8% · CA 9.0%
Free or reduced lunch74.3% · CA 64%
Median income$106K · CA $85K
Median home value$915K · CA $659K
Bachelor's degree+54% · CA 35%
ZIP population44,502
Median age46 years
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2024) · ZIP-level
Culture & philosophy
What is the school’s approach?
School-stated approach · questions for your visit
Look beyond the brochure
A source-reviewed culture summary is not available for this profile yet. Ask how teaching, student support and family communication work day to day.
Read the school’s own website ↗Family voices
What would you want another family to know about the daily experience here?
Ask a current family: “When your child needs help, how does the school respond?”
Educator voices
What should families understand about teaching, support and the school community?
Ask an educator: “How do you adapt a typical day for children with different needs?”
Compare nearby schools
What are the alternatives?
Compare schools serving the same grade stage. Private schools have no comparable state-test score.
2025 · middle schools · combined reading and math measures. Percentiles compare schools within their enrollment group.
No nearby schools in this category are listed. The school being viewed stays visible for reference.
| School | Type | Performance band | Advanced | Proficient or Advanced | Distance | Select |
|---|---|---|---|---|---|---|
| Lorbeer Middle | Public | Not available | — | — | School being viewed | |
| Chaparral Middle | Public | Strong | 58% | 82% | 2.3 mi | |
| South Pointe Middle | Public | Strong | 56% | 79% | 3.5 mi | |
| Suzanne Middle | Public | Strong | 43% | 69% | 2.2 mi |
More nearby public and private options
Your other options
Your other options
Nearby public schools across grade levels, plus private options within 10 miles.
Private schools do not receive a Scope Score or statewide ranking on SchoolScope.
11 private schools within 10 miles
Not scored
What should I check before applying?
- District public
- Confirm the attendance boundary and any permit options.
- Charter
- Check applications, priorities and deadlines with each school.
- Private
- Confirm admission requirements, tuition and financial aid.
Moving & enrollment
Which schools could serve my child?
Check your address with the district
School location and nearby schools do not establish attendance eligibility. Confirm boundaries and permit requirements with Pomona Unified.
District information →School website →Schools across the K–12 journey
Elementary · K–5
Armstrong ElementaryPublished boundary overlapScope Score 39/100
Golden Springs ElementaryPublished boundary overlapScope Score 35/100
Decker ElementaryPublished boundary overlapScope Score 26/100
Ranch Hills ElementaryPublished boundary overlapScope Score 45/100
Pantera ElementaryPublished boundary overlapScope Score 75/100
Middle · 6–8
High school · 9–12
The road from this school ends at Diamond Ranch High, which sent 30 graduates to UC campuses last fall and teaches 21 AP subjects. Those numbers describe past cohorts — a child starting here today would reach Diamond Ranch High around 2031, and 6 years is a long time for a school to hold still, and by the state's 2023 count 80% of Diamond Ranch High's graduates enrolled in college somewhere, UC or not.
30 UC enrollees (fall 2025) · 21 AP subjects taught → full record on Diamond Ranch High's page
Source: UC & College Board
Source: sabs_2016. Schools are grouped by grade stage. Nearby schools are not confirmed feeder links or address assignments. Verify the current path and eligibility with the district.
Plan your next step
What should I do next?
Worth a school visit
With no score to read, a visit does the heavy lifting: ask about class sizes, teacher tenure, and where last year's students went next.
- Ask about typical class sizes and the student-teacher ratio.
- Ask how long teachers have stayed at the school.
- Ask where recent graduates or transfers went next.
- Ask whether the tour can step into a working classroom, and watch how a lesson actually runs.
Use the published evidence to prepare questions, then verify fit and access with the school.
Behind the evidence
Inspect the full record
Public sources, visible methods and the underlying school record. Source years and limitations stay attached to the evidence.
How the Scope Score is calculated
On a narrow screen, scroll the table sideways to see the state comparison and weights.
A closer look at the evidence
Lorbeer Middle: reading the evidence
Lorbeer is a middle school in Diamond Bar. We publish no Scope Score, band or rank for it this year — the composite they are all built from isn't on file. Here's what we can show.
Subject proficiency describes tested students, while graduation describes a graduating cohort. These figures are not successive stages followed by the same students.
Explore the underlying data →SchoolScope scores and verdicts are our interpretation of public California Department of Education data — independent analysis, not an official rating. How we analyze · Request a correction