Hello Syed Nawaz Uddin,
Without going into the suggestions & remarks of other members, I would like to make a few points.
1] You mentioned ".......make them understand the Job Requirement". How much sure are you that you are very clear about it YOURSELF? I may be wrong, but going by your various responses, I am not so sure that you have a COMPLETE understanding of the JD yourself. When you yourself don't seem have been given any Training in Recruitment [as being repeatedly being queried by Simhan], how do you expect yourself to TRAIN another person?
2] You said 'most' of the candidates are Freshers. Now, on what basis do you [or your boss OR Company] judge that 5-6 Joining rate for ~100 freshers is LOW? What qualification profile are you looking @? MBAs OR BTechs? OR any other?
And what 'hit rate' do you think is reasonably 'good'?
We recently--in Jan, 2015--handled a Campus Recruitment Drive for BTechs for a client. The 'hit rate' was 7 Selections out of 155 students--and this was after online technical & aptitude tests, GDs & Personal interviews.......AND our client thought we did a great job given their earlier experience of 1 selection out of 120 students.
As a thumbrule, when one doesn't have the skills to evaluate candidates, always try to depend on alternatives--in your case online tests, GDs, etc could be the options [there could be other options too]--that CONVERT the various aspects/attributes to MEASURABLE parameters. Then you don't have to rack your head to make any judgement calls. You have the Ratings [BOTH Absolute & Relative] in front of you.
In a way, evaluating Freshers has BOTH Pluses & Minuses--the Plus aspect being they don't have any earlier experience baggage [a 'clean slate' so-to-say] & hence are easier to evaluate by other means than F2F I/Vs. The Minus is that their inexperience usually leads to immaturity that effects their I/V performance--and this is a bit more tough to judge.
In case you have any further queries, pl ALSO mention the following inputs:
1] What's the size of your Company AND the Recruitment team?
2] Have you discussed the situation with you boss? What was the response?
3] Pl respond to Simhan's query--about whether you were trained or not.
4] Pl give details of the EXACT process you are currently following. ONLY THEN can you get any actionable suggestions/solutions from the members. Else this is more likely to become another TV debate with nothing worthwhile coming out @ the end.
All the Best.
Rgds,
TS