这句话语法有没有问题Taking all these factors into account,in conclusio

(Taking all these factors into account,现在分词作状语) （in conclusion,介词短语作状语）only by group study the way （in which we manage our students定语从句） can we make sure （that the best study effect is gained宾语从句）
去掉这些枝叶后还剩下.
only by group study the way can we make sure sth.
only 引导介词短语前置,用倒装.can we 没有问题.
意思应该是：只有通过小组学习,我们才能确保获得学习效果.
所以,the way 应该是有问题的.
如果再加上后面的定语从句the way in which we manage our students 我们管理学生的方法.从语法到意思,都有些多余.