California School's TB Tests in Expected Range Health officials say test results have fallen within an expected range for a Southern California high school where a student was diagnosed with tuberculosis. Riverside County health officials said Monday that 126 students at Indio High School had positive skin tests for possible exposure to the contagious illness and are being asked to follow-up with chest X-rays. More than 1,300 people were tested on Friday during a four-hour clinic at the school. The county health department says no more than 10 or 15 percent of students should test positive. Officials last week called for the testing after a student was diagnosed with tuberculosis in November. Barbara Cole, the department's director of disease control, says two other students who had abnormal chest X-rays are still being examined for the disease.