It's difficult to say for certain what Albert Einstein's response would have been to such a hypothetical scenario. However, based on what is known about his life and beliefs, it seems unlikely that he would have chosen to become a high school teacher solely for the "common good" if it meant sacrificing his own passions and pursuits.
Einstein was a highly accomplished physicist who made groundbreaking contributions to the field of theoretical physics. He was deeply passionate about scientific research, exploration, and pushing the boundaries of human knowledge. Throughout his life, he sought opportunities to engage in scientific work, theoretical investigations, and collaboration with fellow scientists.
While Einstein did value education and the dissemination of knowledge, it is more likely that he would have sought avenues to contribute to society through his scientific work rather than opting for a career in teaching at a high school level. Einstein's impact on the scientific community and the world at large was primarily through his theoretical and research endeavors.
That being said, it is important to remember that this is purely speculative, as it involves imagining a scenario that didn't occur in history. Einstein's actual choices and decisions reflect his own unique circumstances, motivations, and aspirations.