How does Portola High compare to other high schools in Irvine?

Portola High has a SchoolScope composite score of 76.7/100, placing it at the 96th percentile statewide. 41% of students exceed standard, with a total of 1,275 students tested across grades and subjects.

What percentage of students exceed standards at Portola High?

41.1% of students at Portola High exceed the state standard on CAASPP assessments, while 69.0% meet or exceed it. The gap between these two numbers reveals whether the school pushes students beyond basic proficiency.

What is the chronic absenteeism rate at Portola High?

10.8% of students at Portola High are chronically absent (missing 10% or more of school days). This metric reflects school culture and family engagement, and is weighted at 15% in our composite score.

Portola High

High School

Irvine Unified IrvineOrange County92618

Composite Score

out of 100

State Percentile

of high schools

State Rank

of 1,739 California high schools

School overview

Enrollment

2,503 students

Student-Teacher Ratio

26:1

Free/Reduced Lunch

18%

Teachers

95 full-time

College & career readiness

Graduation Rate

94.6%

AP Exam Prepared

89.5%

A-G Completion

77.3%

College-Going Rate

91.6%

Data source: California Department of Education — ACGR, CCI, CGR reports

Dashboard indicators

ELA Year-over-Year

Declined Significantly

-17.5 pts DFS change

Math Year-over-Year

Declined

-10.5 pts DFS change

EL Proficiency (ELPAC)

18.2%

English learners at Level 4 (Well Developed) · 159 tested

Data source: California School Dashboard 2025, ELPAC 2024

Student demographics

Hispanic9.3%

White18.7%

Asian59.3%

Black1.6%

Other11.2%

Performance breakdown

Performance breakdown for Portola High
Category	Percentage
Exceeded Standard	41.1%
Met Standard	27.9%
Below Standard	31.0%

What other rankings don't show you

Most rating sites report "69% proficient" for Portola High and stop there. Here's what that number hides:

41.1% of students exceeded standard while 27.9% merely met it. That exceeded rate is 25.6 points above the state average of 15.5%. That's 3.4 points below the Irvine Unified district average of 44.5%. Compared to the 5 nearby schools within ~3 miles, this exceeded rate is 6.2 points higher (vs 34.9% average). The gap between "met" and "exceeded" is the difference between a school that clears the bar and one that raises it.

The graduation rate is 94.6% — above the state target. 77.3% of students complete A-G requirements for UC/CSU eligibility — a strong college readiness signal. 91.6% of graduates go on to college within a year.

Chronic absenteeism is 10.8%, better than the state average of 34.0%.

Why the exceeded vs. met split matters →