Scheme of Selection 
The existing scheme of selection was initially designed in the US army, after the second World War. The system was adopted in the selection of officers in Army, Navy and Air Force for induction through National Defence Academy, Army Cadet Corps, Officers Training Academy, Indian Military Academy, Air Force Academy or Naval Academy. 

The selection process has the following stages/components:
(a) Psychological/Intelligence Test. 
(b) Group Testing Officer's (GTO's) Test. 
(c) Personal Interview. 
(d) Medical Examination. 

It is evident that the interview is mainly confined to first three stages of examination while the fourth one concerns the medical examination of only those who get through in the SSB interview comprising of first three components. Evaluation of a candidate is made by three independent examiners. The psychological test is carried out by a psychologist and GTO test is given by a Group Testing Officer (GTO). Personal interview is carried out by the interviewing officer who usually is also the President of the Board.