As part of the interviews and questionnaires, many questions were asked and much data was accumulated about the implementation process of ISO-9000 standard and its success. In order to examine the correlation between success and various factors, an index of success was constructed and later, the level of correlation between the success of different Local Authorities and the activities performed by them was examined. [1]. In order to compare between various Local Authorities an index of success is to be established that is based on an identical foundation of data, therefore the index of success will be set only for those Local Authorities in which an interview for the quality manager has been held and at least for interviewees in the field. In total there are only 23 such Local Authorities. While in one Local Authority the interviews were done in more than one construction project, the index considered for this Authority is an average between the indexes of various projects. The index of success has been done on just 20 Authorities out of the 23 qualified Local Authorities, or those having a nearly complete quality guide, in 3 Local Authorities no interviews could be held and data taken out from them due to their internal reasons.