A Thammasat University study (conducted 2023) proposes school design changes to reduce casualties in attacks by lone offenders: stronger perimeter fences, landscaping or moats to slow intruders, clustered buildings, staggered corridors, extra escape windows, and hiding spaces. The study is a proposal only, with no mandatory rules announced. It urges the Education Ministry and Office of the Basic Education Commission to add active-assailant drills alongside fire drills. For a school owner, the practical step is to watch for any ministry safety rules and consider adding this to emergency planning.