More than a quarter of families across the U.S. had already begun shopping for supplies for the 2021-2022 school year by mid-June, when classes were barely out of session for the summer, according to a survey from the National Retail Federation.

That may lead to a shortage of certain supplies by the time September approaches, as the NRF told News 12 New Jersey on Friday.

Already on Amazon, inventory of grade-appropriate "bundles" or "supply packs" containing such things as pencils, markers, scissors, notebooks, and folders is dwindling, as are bulk items like crayons commonly ordered by teachers.

Get our free mobile app

With another NRF survey suggesting as many as 70% of families will start their back-to-school shopping at least three weeks before classes begin again, those who wait until the last minute may come up short.

And even with most expecting a return to in-person instruction, that could mean a squeeze on electronics and computer-related equipment. NRF data show an increase of more than 10 percentage points in families with children in kindergarten through high school who say they want to buy these items, compared to 2018-2019.

Meanwhile, more than 90% of families plan to stock up on general supplies, clothing, and new shoes, categories in which the numbers have not really budged since 2007.

Buying online and at department stores are the top two destinations for back-to-school shoppers, according to the NRF. Only 27% of families with grade school-age children said they would go specifically to an electronics store, and just 15% of families with kids in college said the same.

Total back-to-school spending for kindergarten through high school is projected to top $37 billion nationwide this year, which would be over $3 billion more than last year and the highest number NRF has ever recorded in its survey, which dates back to 2003.

Trending News Now

Top Trending News stories at the Jersey Shore.