帮忙翻译一段话，翻译的好的话我还会多给分的！谢谢啦

Bloom believe that the main reason for poor school teachers is incorrect because the concept of students and inappropriate teaching methods for this.
Entering the 1970s and 1980s, with the growing field of study, poor students are no longer limited to the study of teaching process, and begun to realize that poor grade students psychological characteristics and social background of exploration. Many psychologists and educators began sociology of view and method for poor students in the same mode of the link between social characteristics. Mainly concentrated in the following areas:
1, and poor grade students specific skills backward mode and change. Research in this area is the center of poor students to the characteristics and language skills improved method.
2, and poor grade students psychological characteristics of the exploration, research in this area is the center attributed the poor hygiene and the resulting characteristics derived from the control point of exploration.
3, and poor grade students family background characteristics of the study.
4, the theoretical role of the tendency of poor grade students issues.