Four Lodi Unified School District schools' test scores are in the top 10 percent statewide.
Those are among the findings released Thursday by the state Department of Education in its annual Base Academic Performance Index report, which not only ranks and compares local schools statewide, but sets a new target score for the following the school year.
Similar school rankings
Schools are ranked in 10 groups of equal size, called deciles, from one (lowest scoring) to 10 (highest scoring).
A school's statewide rank compares that school to other schools of the same type and grade level in the entire state. In sum, a school's statewide rank is the decile where that school's Base API falls compared with the Base APIs of the other schools statewide of the same school type.
Each school also receives a similar schools rank when compared to 100 other schools with similar characteristics.
Lodi Unified School District
Two of the four schools in Lodi Unified that landed among the top scores statewide are once again Aspire Public Schools' Vincent Shalvey Academy and Benjamin Holt Preparatory Academy, both located in Stockton. The other two within the district are Middle College High School and Elkhorn Elementary School.
When compared to other schools throughout the state with similar demographics, two additional schools were in the top 10 percent, or 90th percentile. They include Live Oak and Aspire's River Oaks elementary schools.
In Galt, Liberty Ranch High School is in the 80th percentile — up from 70th last year — when compared to all other schools in California, while Galt High School remains in the 50th percentile.
Estrellita High School is not part of the statewide rankings, as it is an alternative school.
At the elementary level, River Oaks stood out in the top 10 percent when compared to similar schools. At the other end of the district was Vernon Greer, in the 40th percentile.
Base Academic Performance Index
The release of the Base API signals the beginning of the 2011-12 reporting cycle and is calculated using the test results of the previous year, while the Growth API is calculated using the test results of the current year.
Lodi Unified's new districtwide Base API is 751, up from 737 last year. Within the district, 14 schools have a Base API of at least 800 points, up from 10 schools.
In Galt, the elementary district's new Base API is 824, while the high school district's goal is a score of 765. Both are an increase of at least 20 points over last year's base scores.
For more information
Not to be mistaken for 2012 spring testing season results, the Base API reported Thursday merely serves as a school's baseline score, or starting point, based on last year's performance. A school's Base API score plus its growth target becomes that school's goal for its next Growth API score. Those scores are released in September.
It is the second of these two reports, the Growth API, that determines whether a school met or exceeded its growth target, and whether it may be put into state intervention programs designed to help a school improve its academic performance.
For more information or to view the complete district-by-district results, visit www.cde.ca.gov.