20 Least Educated States in the US

2. Louisiana

Population aged 25 and above with high school or less: 45.2%

Population aged 25 and above with a bachelor’s degree or higher: 27.2%

Pupil-to-Teacher Ratio: 17.6

Expenditure per Pupil: $16,151

Insider Monkey Score: 0.098

Louisiana is one of the least educated states in the US, with over 45% of its population aged 25 and above having high school or less as their highest level of education. Of these, 4.2% had studied less than 9th grade, while 8.5% had education between 9th and 12th grades without a diploma. Higher education attainment levels in the state also remain well below the national average.