how was language/culture getting affected by it?
The schools aimed at suppressing the language and culture of the natives . As a result majority of the Indigenous languages existing today are "under serious threat of extinction".
Canadian Indian residential school system

The stigma created by the residential school system regarding transmission of Indigenous culture by elders to younger generations has been linked to the over-representation of Indigenous languages on the list of endangered languages in Canada. The TRC noted that the majority of 90 Indigenous languages still in existence are "under serious threat of extinction". With great-grandparents representing the only speakers of many Indigenous languages, it was concluded that a failure of governments and Indigenous communities to prioritize the teaching and preservation of traditional languages would ensure that, despite the closure of resident schools, the eradication of Indigenous culture desired by government officials and administrators would inevitably be fulfilled "through a process systemic neglect". In addition to the forceful eradication of elements of Indigenous culture, the schools trained students in patriarchal dichotomies useful to state institutions, such as the domesticization o
where did residential schools take place in canada Such schools in Canada were mostly meant for the Indigenous Indians and were located at substantial distances from the Indigenous communities. was the government involved in this? Yes, the Department of Indian Affairs was responsible for this.
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Canadian Indian residential school system [SEP] Loss of language and culture
The inability to communicate was further affected by their families' inabilities to speak English or French. Upon leaving residential school some survivors felt ashamed for being Indigenous as they were made to view their traditional identities as ugly and dirty. The stigma created by the residential school system regarding transmission of Indigenous culture by elders to younger generations has been linked to the over-representation of Indigenous languages on the list of endangered languages in Canada. The TRC noted that the majority of 90 Indigenous languages still in existence are "under serious threat of extinction". With great-grandparents representing the only speakers of many Indigenous languages, it was concluded that a failure of governments and Indigenous communities to prioritize the teaching and preservation of traditional languages would ensure that, despite the closure of resident schools, the eradication of Indigenous culture desired by government officials and administrators would inevitably be fulfilled "through a process systemic neglect".