While the web search results mention the rising number of teenage victims of bullying, the claim specifically asserts a 'steady rise in the number of cases of violence' since the start of the war. The evidence is general regarding rising cases but does not provide sufficient corroboration from multiple independent sources to confirm a 'steady rise' specifically attributed to the war's start.

The claim attributes a specific statistic (three-quarters of all Ukrainian students suffered from stress) to a specific institute (Mindset research institute). While the web search results mention 'Mindset research' and stress statistics, the exact statistic (three-quarters) and the specific study linking it to all Ukrainian students are not independently corroborated by other sources or Wikipedia entries.

The claim that the authors noted that teenagers reacted differently to stress is mentioned in the context of the Mindset study. However, the evidence provided only contains general information about varied reactions to stress (e.g., 'Everyone reacts differently to stressful situations') but does not independently corroborate the specific finding or emphasis from the study's authors.

The web search result mentions that 'Police teams regularly visit High School 45.' While this specific detail is present in the search results, the other sources are general (Kyiv travel, police websites, Wikipedia on Kyiv/Dynamo) and do not corroborate this specific action at High School 45.