The final round of tests in San Diego Unified School District found no schools other than ones that were previously detected had high levels of lead in drinking fountains and faucets, district officials said Thursday. The City of San Diego began testing water at school sites in March, and drinking fountains at Co-Operative Charter School 2 and Emerson-Bandini School were found to have twice the acceptable lead level set by the state. The two Southcrest schools share the same campus.