Palmetto high school is one of the better public schools in Miami but Miami public school are pretty bad and under funded. Palmetto is far from an elite high schools where only rich people go.
Palmetto is the highest achieving public school in Miami-Dade county. It's no Bill Gates's Lakeside School or Zuck's Exeter, but it's where everyone in Dade County public schools who cares about academic excellence sends their kids if they can afford the nearby real estate.