![In this Aug. 18, 2020, file photo, math teacher Doug Walters sits among empty desks as he takes part in a video conference with other teachers to prepare for at-home learning at Twentynine Palms Junior High School in Twentynine Palms, Calif. California.](https://www.gpb.org/sites/default/files/styles/flexheight/public/2022-02/ap_21029764091468-32ca2318d36d86cb58f7ecfeddcc16d749f99a26_3.jpeg?itok=mPwET-op)
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In this Aug. 18, 2020, file photo, math teacher Doug Walters sits among empty desks as he takes part in a video conference with other teachers to prepare for at-home learning at Twentynine Palms Junior High School in Twentynine Palms, Calif. California.
Credit: AP Photo/Gregory Bull, File