I wanted to go to a high school where there wouldn't be many other Japanese students.
I wanted to go to a high school where I would be much less likely to see other Japanese students.
ーI wanted to go to a high school where there wouldn't be many other Japanese students.
「他にたくさん日本人生徒がいない高校に行きたかった」
a high school where there wouldn't be many other Japanese students で「他にたくさん日本人生徒がいない高校」
ーI wanted to go to a high school where I would be much less likely to see other Japanese students.
「他の日本人生徒をほとんど見かけない高校に行きたかった」
a high school where I would be much less likely to see other Japanese students で「他の日本人生徒をほとんど見かけない高校」
ご参考まで!