“…While the adoption of SFSPs by governments is important ( Rozema et al , 2016 ; Linnansaari et al , 2019 ), such top-down rules only become part of adolescentsâ school life if these are consistently enforced by school staff. Consistent enforcement is a crucial requisite for realizing SFSPâs optimum effectiveness on the collective of adolescents ( Wakefield et al , 2000 ; Galanti et al , 2014 ; Schreuders et al , 2017 ), because adolescents may (i) interpret staffâs inconsistent enforcement as a sign that health risks of smoking are not so serious ( Clark et al , 2002 ; Baillie et al , 2007 ), (ii) believe consequences are applied in unfair and biased fashions ( BoothâButterfield et al , 2000 ; Gittelsohn et al , 2001 ; Clark et al , 2002 ) and (iii) abuse staffâs leniency in attempts to gradually weaken the rules ( Turner and Gordon, 2004 ). In real life, however, inconsistent enforcement is the rule rather than the exception ( Baillie et al , 2011 ; T. LeĂŁo et al , 2019 ).…”