The ISA Astronomy and Astrophysics Summer School is a prestigious 4 to 6-week online internship program, crafted to ignite the passions of bright and motivated undergraduate and master's students in the realms of astronomy and astrophysics. This program is meticulously designed to immerse students in cutting-edge research and foster a deeper understanding of the universe. The program includes expert-led lectures on astronomy and astrophysics, hands-on research projects, and outreach activities like blog writing and webinars, all aimed at fostering public interest in the cosmos.