We recommend that future exchange students look at other countries instead of Spain when they consider in which country they want to become exchange students.
We also recommend that present exchange students in Spain are kept monitored by their families back home so they can be pulled out very quickly if the situation becomes violent. Spain suffered heavily the last time when the local parliament at that time were forced out by Franco.
In general we also recommend a full stop dealing with Spanish firms and supporting their turism industry until they agree to negociate with the local parliament. To a start they could demand that the voters are listened to again by arranging for a new vote for independence done under conditions of a higher standard.
The central government in Madrid does not seem to listen now. Let us hit them on their vallet until they start to respect democracy.
Keep your children safe and put pressure on the central government in Madrid so Spain can be a place for foreign exchange students again.