Back to School 2015: by the numbers

78 million: Children and adults enrolled in school in the U.S. (preschool through college) in October, 2013.

48.29 million: Public school enrollment (elementary and secondary) in Fall 2012.

$10,700: Amount of current public spending per pupil in elementary and secondary school systems in the U.S. in 2013.

$630.36: Amount per U.S. household expected to be spent this year on back-to-school purchases.

$24.8 billion: Total amount predicted to be spent.

$8.5 billion: Predicted to be spent on clothes.

$4.63 billion: To be spent on shoes.

$3.85 billion: To be spent on supplies.

19.6 percent: Of back-to-school shoppers shopped beginning two months ago.

3 percent: Will wait until after school starts.

15 percent: Of college and graduate students who were 35 years old or older in October 2013.

40 percent: Of all U.S. 18- to 24-year-olds were enrolled in college or graduate school in October 2013.

146,000: High school students worked full-time, year-around in 2011.

3.1 million: High school students worked less than full time.

$82,720: Average earnings of full-time, year-around workers with a bachelor’s degree or higher in 2012.

$41,248: Mean earnings for workers with a high school diploma or GED certificate.

This story was originally published September 2, 2015 at 6:39 AM with the headline "Back to School 2015: by the numbers."