correct - " Teachers of English department are told to identify the students weak to communicate in English and help them'

Question

Is it correct - "The teachers of English department are told to identify the students weak to communicate in English and help them"  OR   "The teachers of English department are told to identify the students who are weak to communicate in English and help them" 

Answer 1

Teachers of the English Department are told to identify and help students whose communication skills are weak.

Answer 2

Neither sentence passes muster!