When should I disobey my parents?

You should only disobey your parents when they try to make you disobey God. They might ask you to do something God condemns, or they might keep you from doing what God commands. You ought to obey God rather than man (Acts 5:29). Michal disobeyed her father, who was also king, to save David’s life (I Sam 19:11-17). Since God severely defends parents against rebellious children (Deut 21:18-21; 27:16; Pr 20:20; 30:17), you should be very certain with much evidence that the Bible justifies your disobedience.

For further study of the Christian and authority:

Ordinance of Authority