While the emphasis on teaching to higher,test-driven standards as set in No Child Left Behind resulted in significantly better performance in elementary(and some middle)schools,是从句部分,the emphasis on teaching to higher,test-driven standards as set in No Child Left Behind 是从句的主语,resulted是从句的谓语动词,high schools for a variety of reasons seemed to have made little progress是主句.不存在一个句子又有两个主语的情况.大体意思是,尽管对……的强调在小学（及部分中学）成效显著,中学由于种种原因却没有取得什么进展. While the emphasis on teaching to higher,test-driven standards as set in No Child Left Behind resulted in significantly better performance in elementary(and some middle)schools,是从句部分,the emphasis on teaching to higher,test-driven standards as set in No Child Left Behind 是从句的主语,resulted是从句的谓语动词,high schools for a variety of reasons seemed to have made little progress是主句.不存在一个句子又有两个主语的情况.大体意思是,尽管对……的强调在小学（及部分中学）成效显著,中学由于种种原因却没有取得什么进展.