The  so  called  "schoolbook  amendment"  to  the  Education  System  Act  adopted  in  2014  introduced  new  provisions regulating marketing practices of schoolbook publishers. For the first time in history, the amendment implemented two provisions prohibiting particular practices classified by the legislator as unfair competition acts. The first ban applies to offering, promising or granting any benefits, directly or indirectly, to schools or teachers in consideration for choosing specific  textbooks,  educational  materials  or  practice  materials.  The  legislator  wishes  to  eliminate  corruption-related phenomena in the school-publisher relation. The second ban applies to offering a textbook in combination with another textbook  or  additional  teaching  materials  meant  for  schoolchildren.  This  way,  it  applies  to  a  certain  type  of  tying arrangements that occur in the publishing market. In both cases, these brand new types of unfair competition acts are subject to critical assessment as part of the extended regulation shaping the legal framework applicable to the Polish market of textbooks and related educational aids offered by publishers.