A twofold concern in the United States (U.S.) is the increasing number of Mexican American adolescent grandchildren being raised by their grandparents and the lack of research on the lived experiences of this population. Consequently, the purpose of this phenomenological study was to implement the transcendental phenomenology model proposed by Moustakas (1994) to explore the research question: "What are the lived experiences of Mexican American adolescent grandchildren aged 12 to 18 being raised by their grandparents?" Nine Participants were recruited to share a personal description of their lived experiences in two interviews conducted in sessions of 30 to 45 minutes each for a total of 60 to 90 minutes. The results of this study support the findings in previous research by Polo and López (2009) that the varieties of challenges of this population include socioeconomic and financial concerns, stress and emotional issues, differences in acculturation, language barriers, differences in the level of education, and the presence of a generation gap. Furthermore, Goodman and Rao (2007) explain that this population demonstrates remarkable resiliency and strength in spite of a variety of hardships and obstacles. These assertions are confirmed by the conclusions of this study which indicate that the lived experiences of the Participants were challenging, yet also satiated with a determination to succeed, unconditional love, family obligation, respect, and maturity. In conclusion, the data collected in this study indicates several relevant implications for certified school counselors (CSCs) working with the population studied, which include promoting advocacy, providing referral resources, fostering student achievement, and collaborating with these families and the entire school community.