A 14-year-old's shooting at Debsirin Nonthaburi School on Aug 7 killed nine people, including five teachers. On-site classes resume on Tuesday. The Department of Mental Health is running counselling for about 200 affected students, about 220 staff, and families for up to a year, and about 60 high-risk students are under close watch. For most small business owners this is background; the only practical point is that nearby parents and schools may be more sensitive for a while.