Men teaching women without a barrier

A: It is impermissible for a man to teach a woman while she is not wearing the Hijab (veil) (Part No. 12; Page No. 158) or in Khulwah (being alone with a member of the opposite sex), even if she is wearing the Hijab. A woman should cover completely in front of an Ajnaby (a man other than a husband or unmarriageable male relatives). As for covering the head and revealing the face, this is not complete Hijab. However, there is no harm in teaching a woman from behind a barrier in schools dedicated for women, where there is no mixing between boys and girls, or between male teachers and female students.You can teach women according to these Shar`y (Islamically lawful) rules, and you shall be greatly rewarded, as teaching people religion and warning them about Bid`ahs and superstitions is one of the best deeds. Whoever guides people to any form of goodness will be rewarded as much as its doer, without it affecting their reward. This is established in the Sahih (authentic) Sunnah. It is reported from Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace be upon him) said, If anyone calls others to follow right guidance, their reward will be equivalent to those who follow them (in righteousness) without their reward being diminished in any respect; if anyone invites others to follow error, their sin will be equivalent to that of the people who follow them (in sinfulness) without their sins being diminished in any respect. Narrated by Muslim. It is impermissible for you to disregard Bid`ahs or falsely compliment their doers, but you should advise them wisely and use good preaching, (Part No. 12; Page No. 159) not severity. You should follow the best suitable way you see for Da`wah (calling to Islam) to reach them.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.