We are pleased to announce our upcoming Summer School Program named PRECISE (PREcision Cosmology In the era of big-data SurvEys). The program will be held from July 3rd to July 7th, 2023, and will be oriented towards learning techniques for analysing large datasets from cosmological observations and simulations. PRECISE is designed to provide an immersive learning experience for students and early career researchers who are interested in advancing their knowledge and skills in the field of cosmology. The program will feature a wide range of activities and courses, including lectures, workshops, and hands-on projects that will allow students to gain practical experience in analysing large datasets in cosmology. Our sessions will be led by experts in the field of cosmology to deliver the lectures and guide the students through the program. The program will cover topics such as data analysis techniques, statistical methods, machine learning, and high-performance computing.