2020 No https://doi.org/10.1080/15459624.2020.1803494 Summan, Ahmed Saleh North America Observational Exposure Study Teachers High School (9-12) Noise Hearing Noise Occupational exposure teacher's exposure to noise Technology educational shops Study monitored 17 high school technology education shop teachers’ noise exposure using dosimeters. Nearly 60% exceeded safe levels. Results support improved engineering controls and policies to reduce occupational risk and enhance learning environments.