1. An information competency evaluation system connected to a terminal of an evaluation target for evaluating a level of information competency and a maturity of the evaluation target, comprising: an evaluation model database to classify and store a plurality of evaluation groups which are classified by business departments and positions and evaluation problems by a plurality of evaluation domains in which components of the information competency are classified by domains; an education information database to classify and store education information, corresponding to a plurality of maturity stages, by the evaluation groups; an information competency evaluation server to select an evaluation group corresponding to the evaluation target according to a business department and a business position of the evaluation target, to read the evaluation problems corresponding to the selected evaluation group by the evaluation domains from the evaluation model database to provide the same to the terminal, to evaluate evaluation responses that are received from the terminal due to the provision of the evaluation problems to estimate an evaluation result, and to output evaluation indices for the evaluation domains in which weight values of evaluation elements are applied to the evaluation result and evaluation indices of information competency in which weight values of the evaluation domains are applied to the evaluation indices of the evaluation domains; an information competency maturity evaluation server to select a first maturity stage corresponding to the evaluation index of information competency and a second maturity stage corresponding to the an evaluation index of a core evaluation domain with higher importance among the evaluation indices from the plurality of maturity stages, to compare the first maturity stage with the second maturity stage, and to select and output the information competency maturity stage of the evaluation target; and an information competency analysis server to estimate an average evaluation index of information competency for the entire evaluation groups, an average evaluation index of information competency for the business department, and an average evaluation index of information competency for the business position, to compare the estimated average indices with the evaluation indices of information competency of the evaluation target, to provide an analyzed result, made by the comparison, with the evaluation indices of the evaluation domains, the evaluation indices of information competency, and the information competency maturity stage for the evaluation target to the terminal, and to read the education information corresponding to the information competency maturity stage of the evaluation target from the education information database to provide the read education information to the terminal.