Despite these restrictions, Arabic lessons were compulsory for all students. Pupils were also encouraged to begin and end lessons with prayer, and loudspeakers were used to broadcast calls to prayer.
Headteachers at the schools were marginalised, according to the report, with all three schools in reality being run by Tahir Alam, who ran the board of governors.
Inspectors say close relatives of the school management were appointed without proper background checks and that, in some schools, the headteachers were unaware of the names of some of the most senior staff.
Park View headteacher Lindsey Clark resigned last month after being reduced to a figurehead with no real control over her school.
The report also contains allegations that school governors were rude or dismissive towards female staff, who were excluded from important meetings.
In some cases, male governors even refused to shake their female colleagues' hands.
Speaking to MailOnline, a Department for Education spokesperson said: 'We do not comment on leaked documents.
'The allegations made in relation to some schools in Birmingham are very serious and we are investigating all evidence put to us in conjunction with Ofsted, Birmingham City Council and the police.
'It is absolutely vital these investigations are carried out impartially, without pre-judgment. It would be inappropriate to comment further at this stage.'
A spokesman for Park View school was unavailable for comment.
