I would not called it a solved problem, but lets describe the Swedish approach. Any government or organization acting for the government (which schools and univ

I would not called it a solved problem, but lets describe the Swedish approach. Any government or organization acting for the government (which schools and universities are included), must act under the principle of objectiveness and equallity. From this principle the educational department has policy that if a school has political activities, such as inviting political representatives, they must only do so under objective terms equal to all political parties. They explicitly write that selecting the invitation on the basis of excluding someone is not allowed. They can also not base the criteria in order to exclude certain political views. During a time when a controversial right-wing party gained popularity, some schools decided to stop doing political activities with students as a result. Others allowed any party to join in the discussions with students, as suggested by the policy.