The article didn't specify whether the woman taught children or adults in the Sunday School. If she taught children the Bible allows for this. If she taught adult men and women it's about time someone put a stop to her teaching. Men are not to be taught by women according to the Word of God. Men (and women) are to be taught by their authorized Pastor/Teacher.
How could they have let this go on for 50 years, contrary to the Mind of Christ?