Abstract The present study aimed at identifying the linguistic enlightenment level of eleventh 11th grade students in Jordan. The study’s sample consisted from two hundred (200) female and male students who were selected through using the random stratification method from Al-Karak public schools at Jordan. In order to fulfill the study’s objectives, the researchers of the current study prepared a multiple - choice objective test that consisted from fifty (50) items. Each item includes four (4) choices. Those items cover three linguistic systems of Arabic; the syntactic, morphological and semantic systems. The study’s results showed that students showed a low linguistic enlightenment level in the aforementioned linguistic systems. That was concluded through having an arithmetic mean of (27.52) and a relative weight of (55.04) %. The results also showed that there isn’t any statistically significant difference between students’ linguistic enlightenment levels – at the significance level