This study explored the impact of the alternative learning activity (ALA) program offered in the Philippine Science High School-Ilocos Region Campus toward students’ leadership abilities. A mixed-methods approach was used to conduct the study through a survey of 132 student leaders affiliated with ALA clubs in the years 2022 to 2024. The results indicated that the participants exhibited strong expertise in communication, critical thinking, character development, citizenship, diversity appreciation, global understanding, and skill development in the measured indicators, suggesting that the ALA program is effective in producing well-rounded leaders. The findings also showed that almost all dimensions of leadership qualities exhibited the strong positive relationships between indicators, indicating their significant relationship and hinting that effective leadership is multidimensional. In ALA clubs, it was found that excellent leadership practices include providing diverse learning opportunities (kataguyod), offering targeted skill training (katuwang), offering mentorship and peer support (kaagapay), provision of leadership support (kalakbay), and inclusivity enhancement (kabahagi). These are beneficial practices, not only instill skills among the members but they also promote personal development. These findings show the importance of specialized leadership training in preparation for varied leadership roles.