Arroyo High School is located in San Lorenzo, California, and is part of the San Lorenzo Unified School District (SlzUSD).

Serving as one of three public high schools for San Lorenzo and parts of San Leandro, its sister high school and cross-town rival is San Lorenzo High School.

SlzUSD also has a third high school whose campus is currently under construction.

These four CPAs are also called Small Learning Communities (SLCs).

47% (859) are Latino, 31% (558) are Asian, 11% (195) are White, 7% (127) are African-American, 3% (48) are two or more races, 1% (25) are Pacific Islander, and less than 1% (7) are American Indian or Alaskan Native.