[kamaal]

>>All students have to go through a series of practice interviews

Interviewing is supposed to be hiring people who work everyday, to do everyday jobs.

If people have to practice to clear your interviews. You are either hiring the wrong people, or people who want to get in to only game the interview. In both the instances you are hiring the wrong people.

Put in other words if even ordinary perfectly qualified candidates have to practice to clear a company's interview. The company is likely asking wrong questions.