Castlemont High

Castlemont High is an average-sized high school in Oakland, California, part of Oakland Unified. The school instructs 719 students in grades 9 through 12.

Oakland Unified comprises 84 schools with combined enrollment of 33,973 students; Castlemont High is among them.

Looking at the student body, Castlemont High lists that the largest single group is Hispanic, at 61% of enrollment. The remainder consists of 29% Black, 3% multiracial, 3% Pacific Islander, 2% White. By comparison, Alameda County as a whole is about 23% Hispanic, so the school skews meaningfully more Hispanic than its surroundings.

On the income-and-resources front, Castlemont High records 51 full-time-equivalent teachers, putting the student-to-teacher ratio at about 14.0:1. That figure is tighter than the state norm's 18.2:1 average. Roughly 99% of students at Castlemont High qualify for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal. That share is higher than Alameda County's rate of about 49%.

On a residual basis (actual vs predicted given the student mix), Castlemont High sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 20.5%; this one delivers 7.3%.

In the broader community, Alameda County reports that the typical household earns roughly $129,367 per year, roughly 52% of adults have completed at least a four-year degree, and census figures put the poverty rate at about 6%. Across Alameda County's 394 public schools (combined enrollment of about 210,511 students), Castlemont High is one campus in the mix.

Nearest neighbor: LPS Oakland R & D Campus, around 0.1 miles off. Within five miles, there are 8 other public schools.

The school occupies a metropolitan site.

Five-year trend. Over the past 7-year window, the student count edged down 16%: 858 students in 2018 compared to 719 in 2025. The student-to-teacher ratio narrowed from 16.4:1 in 2018 to 14.0:1 today.

On the community side, the page collects discussion, questions, and updates around sports schedules, lunch menu changes, and school spirit week. Anyone with firsthand experience at this school can post or comment.