Communication skills are regarded as the heart of teaching and learning process. Communication skills are usually defined as interaction that builds connection between students and teachers to help them understand each other and promote common interests. The process of communication is envisaged as transferring of idea or skill to another person accurately and satisfactorily for effective communication we need several communication skills. The major objective of present study was to investigate effectiveness of professional knowledge skills in communication.The characteristics of the research were descriptive type. The population of the research contained following groups (i) All the heads of department of post graduate collages in the Punjab (ii) all the students learning in these collages. The sample was selected from 30 male and 30 female degree collages with rating their heads and 20 students from each collage. Questionnaires were used as research instrument for gathering information. Data were gathered tabulated, examined and considered by using indicates of appropriate illustrative mathematical techniques in the mild of the goals. Major conclusions showed quite similar views of students and principals regarding effectiveness of teaching skill and knowledge of the instructors. Major recommendations include, the teachers should be kind and willing to remove distance from teacher and taught through creating friendly atmosphere in the class. Teachers should be trained how to use instructional technology and new methods of teaching. Key words: Level of Effectiveness, Communication Skills, College Leve