This study aimed at recognizing the effect of the Time Management Art on academic achievement among high school students in the Hashemite Kingdom of Jordan. The researcher employed the descriptive-analytic research to achieve the purpose of the study where he chose a sample of (2000) high school female and male students as respondents to the questionnaire. In the conclusion, the findings showed that there was a medium degree and statistical significance at the level of time management according to the high school students in Irbid city. And the presence of statistically significant relationship between the ability to manage time and academic achievement among high school students, also it showed that there was a statistically significant at the level (a=0.05) of this relationship regarding the gender variable running on the behalf of females while there was no any differences according to studying hours. At the end of the study, the researcher recommended the need to hold seminars and lectures for students to help them know about how to allocate the right time for subjects in order to obtain higher levels of academic achievement.