Anxiety has been considered as a transitory emotional and physiological state, as a personality trait, and as an explanation for a behavior. Anxiety does not always vary in direct proportion to the objective danger produced by a given situation, but tends to occur irrationally, that is, in situations without real danger. A descriptive quantitative research of transversal type was carried out, in which the levels of school anxiety were measured simultaneously, by means of the application of the State-Rask Anxiety Inventory (STAI).