There are plenty of good schools in California and I’m sure you can find a school that will work for your family. My family moved when I was in grade school and again while I was in high school. Was it perfect for me? No, but it was necessary for the family.
My own kids had to move twice in high school and they adjusted. One of my kids is Asian and when given the option of going to a 65% Asian school (moving from a school that was about 5%) she turned it down because the sports teams at that school weren’t very good (stereotype correct in that case) and they didn’t offer her sport. The two high schools she did go to in California had a good percentage of Asian students, probably about 15-20%. She ended up graduating from a high school with only about 5% Asians. The valedictorian was Asian.
You will find the school that is right for your child. Make the decision that is right for your husband’s career and your health.