; (E) methods for evaluating the efficacy of safeguards; and (F) providing additional control options that allow parents to address the harms described in section 3(a); and (2) outline conduct that does not have the purpose or substantial effect of subverting or impairing user autonomy, decision-making, or choice, or of causing, increasing, or encouraging compulsive usage for a minor, such as— (A) de minimis user interface changes derived from testing consumer preferences, including different styles, layouts, or text, where such changes are not done with the purpose of weakening or disabling safeguards or parental controls; (B) algorithms or data outputs outside the control of a covered platform; and (C) establishing default settings that provide enhanced privacy protection to users or otherwise enhance their autonomy and decision-making ability. (b) Guidance to schools Not later than 18 months after the date of enactment of this Act, the Secretary of Education, in consultation with the Federal Trade Commission and the Kids Online Safety Council established under section 12, shall issue guidance to assist to assist elementary and secondary schools in using the notice, safeguards and tools provided under this Act and providing information on online safety for students and teachers. (c) Guidance on knowledge standard Not later than 18 months after the date of enactment of this Act, the Federal Trade Commission shall issue guidance to provide information, including best practices and examples, for covered platforms to understand the Commission’s determination of whether a covered platform had knowledge fairly implied on the basis of objective circumstances for purposes of this Act. (d) Limitation on Federal Trade Commission guidance (1) Effect of guidance No guidance issued by the Federal Trade Commission with respect to this Act shall— (A) confer any rights on any person, State, or locality