博士生和教授的科研水平“ 大致等同于教师的水平--what does this mean?

read many times, and did not figure out this sentence ---博士生和教授的科研水平“ 大致等同于教师的水平-- 

教师 without research are called lecturers in formal universities-- they equal to 博士生和教授? There are huge distance.

University/college without strong 科研 of 博士生和教授 is called community college.