"oh No, Not A _________!" in General geocaching topics Posted October 16, 2007 O no not another Urban micro film canister thrown out the car window log only and my least favorite of all (because technically they are against the law!!) SCHOOL CACHES!!! Yes, who in their right mind would place one at a school? I've been to several. Having been a middle school teacher, you need written permision to be on school grounds at any time unless it is a public function. At least thats how it works in Cali. Peace!