In a resurfaced letter to Minnesota Gov. Tim Walz, the head of the Minnesota Catholic Conference expressed that Catholic and other nonpublic schools were in "urgent and critical need" of security improvements, saying, "Our schools are under attack."

The plea went unheeded, and two years later, the concerns raised by Catholic leaders materialized when a gunman opened fire on students of a Minneapolis Catholic school while they were attending Mass, leaving two dead and 17 injured.

The letter was first reported on by the Daily Wire and was sent by Minnesota Catholic Conference Executive Director Jason Adkins and Tim Benz, president of the private school advocacy group MINNDEPENDENT. The letter was sent on April 14, 2023, and is still publicly available on the Minnesota Catholic Conference’s website.
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The leaders expressed serious concern that the 72,000 students enrolled in independent, Catholic, Jewish, Christian and Muslim schools in Minnesota could be in danger due to nonpublic schools being excluded from the $50 million Building and Cyber Security Grant Program and the state’s Safe Schools Program, which provides emergency response training, security upgrades, mental health services and other security measures.

The leaders said they were especially concerned given "the most recent, and continuing attacks, on our schools in this country and in our state."
- https://www.foxnews.com/politics/unearthed-letter-exposes-how-minnesota-catholic-leaders-warned-walz-school-safety