 Recognized religious minorities could provide religious instruction in non-Persian languages, but such texts required approval by the authorities.This approval requirement sometimes imposed significant translation expenses on minority communities.The condition imposed began from 1981 and were reiterated in the fall of 1983 - the Ministry of Education and Training ordered that religious education must be done in Persian, a text written by the MET must be taught in all registered religious minority schools, schools must seek special permission for any ceremonies, and in keeping with society-wide restrictions, female teachers and students must observe Islamic dress code including Hijab when necessary (this last was re-inforced in 1985.)