Circumstances around his death were not immediately announced.
Baldwin worked at Bergenfield High School for more than 12 years, having founded the school's eSports team and culinary arts club.
Superintendent Christopher Tully remembered Baldwin as a "caring, loving, and dedicated teacher providing his expertise with his students," who took pride in his students' success.
"Seeing him on a daily basis was like seeing our best friend who we thought would always be there," Tully said. "Mr. Baldwin was truly a special teacher who made a positive impact on anyone who met him."
Baldwin was voted Bergen County Teacher of the Year in 2017-18, according to the Bergenfield Schools Facebook page.
Grief counselors will be available for the BHS community.
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