First, we reviewed the extensive educational research that has compared academic outcomes in students attending single-sex versus coeducational schools.
首先，我们回顾了大量的教育研究，这些研究比较了单性别学校学生和男女同校学生的学业成绩。
2
At the local level, policy statements and researchoutcomes need to be translated into prevention programmes and activities in communities.
在地方层面，政策声明和研究成果必须转化为社区预防规划和活动。
3
It summarizes the qualitative and quantitative characteristics of private benefits of control and presents the existing researchoutcomes, which lays a foundation for the following chapters.