Bagrut is a state issued diploma something like a Regents diploma in NY (although much tougher). Generally, girls have much less of a problem learning secular studies because they have no mitzva of talmud torah and therefore many Beis Yaakov's prepare the girls for Bagrut. The success of these schools has led to a backlash. A notice in the name of R' Elyashiv was published last week, that a school can either be a Beis Yaakov or offer Bagrut not both.
The reason was given that if girls take Bagrut they may (heaven forbid) want to go to university or get a good paying job in the secular world. The problem with this is that the women are now supporting the husbands who are learning. By cutting off heir education they are being doomed to low paying jobs.
Below is an excerpt from a recent article that explains the reasoning.