Why do women pray behind men?
The ritual prayer requires concentration and complete devotion to the remembrance of God. Therefore, anything that might cause a distraction for a Muslim in prayer is avoided. This is why men and women stand in separate rows. It is not considered appropriate to the dignity of Muslim women to pray in front of men, as garments can come loose in prayer and could reveal parts of her body which ordinarily are covered up. This would not only be embarrassing for the woman but would also distract men praying behind her, so the arrangement in Islam is that men pray in front of the women.