References:[1] Shield, B., Conetta, R., Dockrell, J., Connolly, D., Cox, T., & Mydlarz, C. (2015). A survey of acoustic conditions and noise levels in secondary school classrooms in England. The Journal of the Acoustical Society of America, 137(1), 177-188.[2] Haines, M. M., & Stansfeld, S. A. (2003). The effects of environmental noise on child health and learning:

References:[1] Shield, B., Conetta, R., Dockrell, J., Connolly, D., Cox, T., & Mydlarz, C. (2015). A survey of acoustic conditions and noise levels in secondary school classrooms in England. The Journal of the Acoustical Society of America, 137(1), 177-188.[2] Berg, F. S., Blair, J. C., & Benson, P. V. (1996). Classroom acoustics: The problem, impact, and solution. Language,