Learning is one of the most important activities in life. Just as learning is important from an early age, it is important to develop learning habits from childhood. The more developed study habits, work habits and learning methods (learning techniques and methods), the more successful the learning will be. Developed study habits are especially important for high school graduates. Grammar school graduates are burdened with school obligations, preparing and writing the state matriculation exam, and choosing and enrolling in colleges. Graduates of private gymnasiums have slightly different experience and conditions than graduates of public gymnasiums. Private high schools offer: an individualized way of working, a wide selection of extracurricular activities, numerous excursions and trips where you can learn "first hand"...etc. However, private gymnasiums are one of the most expensive educational institutions in the Republic of Croatia, which limits students whose parents do not have the financial means to pay to attend them. This research was motivated by a personal interest in this topic and a desire to improve private education in the Republic of Croatia. The aim of the research was to examine the study habits of graduates of private high schools. 101 graduates of a private high school in the City of Zagreb participated in the research. By analyzing the collected data, it was concluded that graduates of private high schools do not have developed work habits and that the work habits of graduates differ with regard to gender. Also, it was concluded that graduates of private gymnasiums use learning methods while studying. Ways of learning that are listed and examined in the research are thought pattern, extract writing technique and mnemonics. The learning methods of high school graduates do not differ with regard to gender. Likewise, it was established that graduates of private high schools are burdened with school obligations.