Many educators don't support the use of AI writing detectors
These detectors result in both false negatives and false positives, which can result in tagging a student paper as written by AI when it wasn't.
In addition, if your native language isn't English, these tools will often tag your writing as written by AI. See GPT detectors are biased against non-native English writers - Weixin Liang, et al.
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Instructors are creating classroom policies on the use of generative AI.
Here's a crowdsourced collection of classroom policies on the use of ChatGPT and other geneartive AI tools.
Classroom Policies for AI Generative Tools (collected by Lance Eaton)