Demands for some form of separatism on grounds of religion have been perceived as a threat to mainstream education. 要求按照宗教背景实行某种形式的隔离主义被视为是对主流教育的威胁。
What was once considered a special form of education using nontraditional delivery systems, is now becoming an important concept in mainstream education. 以前被认为是用非传统方式传输系统的特殊教育形式,现在正在变成主流教育中的一个非常重要的概念。