This study incorporates the design and validation of a questionnaire for the evaluation of Careers Advisory Services and the systematic processes that influence it (family, peer groups, socioeconomic status, etc.). In addition, it examines its psychometric properties within a multicultural population of students attending educational centres in the south of Spain. It seeks to create a valid instrument that is reliable as a measurement tool and useful for evaluating decision making situations relevant to the future working context. A perspective of working life is given through consideration of the degree choices made by those involved in the decision-making process. The metrics used showed high content and construct validity. Structural equation modelling (SEM) and confirmatory factor analysis (CFA) were employed. Indicators described by Wald and Lagrange were used to examine and modify the model in order to obtain a model that best fits relevant theory and goodness of fit criteria. Educ. Sci. 2019, 9, 285 2 of 13 problem [5][6][7][8]. This issue is particularly pertinent for students in the final stage of their education who lack motivation due to not being adequately informed [9]. This is the focus of the present study. Despite challenges to the decision making processes of adolescents, parents respect them, assuming a subsidiary role of support and listening, that influences upon security and self-efficacy [10].Thus, during the stage of secondary education that coincides with academic choice, vocational maturity is still found in a state of crescendo. From this arises the urgent need to work with both families and educational centres in a way that encourages students to take decisions in order to overcome feelings of uncertainty [11].Multiple factors have an influence on decision making. These include the influence of the peer group, the economic situation and individual characteristics, amongst others [12][13][14]. This being said, it has been noted that, amongst these factors, the parental context is one of the most significant variables [15][16][17][18].At the time of making a decision, children feel that they are supported when they see parents who are involved and hold positive expectations [19,20]. One of the central variables is the educational level of parents. If the parents themselves possess university qualifications, it is more likely that their children will also decide to attend university [10].Another of the determining factors in the choice of one's future career is the family's socioeconomic level [21]. This is significant given that it has as much of an effect on the resources available to invest in education, as on the urgency for the child to enter the workplace in order to contribute with an income [22].Thus, achieving professional recognition and prestige, or obtaining a well-paid job, are extrinsic motives [23] in the decision to study for a specific academic career.The vocational and professional orientation and guidance received from careers services, is another one of the key point...