Results released this week, though, show Florida's 65 percent participation rate is above the 47 percent national rate. High participation tends to lower average scores.
Florida's composite again was 19.5 compared to the national average of 21, which dropped slightly from 21.1.
This year's result halts a downward trend for Florida, which posted a 20.3 just four years ago.
Florida also trailed in meeting college readiness benchmarks. Only 16 percent of Florida students met all four benchmarks - English, reading, math and science - compared to 24 percent nationally.