This link takes you to a list of articles about surveillance in schools on EBSCO. Not everything will be relevant to your research, so read the summaries carefully.
This link will take you to a page that discusses several different opinions on keeping schools safe. Not all of them will be about surveillance tech. Many will be about the right to privacy.
The ACLU (American Civil Liberties Union) is an organization that seeks to protect civil rights in the US. They opposed the violation of privacy in the name of security.
This article from the Pew Research Center summarizes results from a 2019 survey how Americans view surveillance and the impact it has on their privacy.
This article is written for school administrators who are considering the installation of CCTV cameras at school. It lists what aspects they must consider to balance student safety with student privacy.
This editorial piece from the Australian newspaper, Sidney Morning Herald, is written by a former head of school and educational consultant. The comments following the piece show readers for and against. Do not use the comments are basis for your argument, but do read them to see the variety of views.