Mr Arif said some parents even tried to ban Christmas decorations and remove music from the curriculum.
The revelations emerged during an employment tribunal of teaching assistants Hilary Owens, Rehena Khanom, Yasmin Akhtar, and Shahnaz Bibi who claim they were unfairly dismissed from the school.
They claim they were forced out of the school after headteacher Rizvana Darr received faked resignation letters in their names on December 10, 2012.
The school and its governors have claimed the resignation letters were part of efforts by the four teaching assistants to destabilise the school's governing body.
Giving evidence, Mr Arif said the teaching assistants were part of the Salafi parents' attempt to Islamise the school, creating "huge problems and instability".
SWNS It's claimed some parents refused to let their children take part in swimming lessons
The appointment of headteacher Mrs Darr was quite controversial - she chooses not to cover her hair with a hijab
The parents, who formed the Adderley School Parents Group (ASPG) and shared ideas on a private Facebook page, caused "colossal" problems claimed Mr Arif.
He said that after Mrs Darr was appointed head in 2009 "the dissent hatched up".
Salafi is an ultra conservative movement within Sunni Islam and supports Sharia or Islamic law.
Mr Arif, who left the school in 2012 after marrying Mrs Darr, said both he and his wife were regularly "challenged" by parents over their own personal religious beliefs.
He said: "The appointment of Mrs Darr was quite controversial - Mrs Darr is a Sunni Muslim and chooses not to cover her hair with a hijab.
"This, coupled with the fact that she is a female in authority, was not received well by some of the stricter Muslim community."
And he claimed Mrs Darr is regularly "verbally abused" by the Safali community who hurl "highly personal" insults at her.
He said some staff members became "sympathetic " to the Safali parents' views and in turn became "disruptive" - with 16 staff all calling in sick on one single day back in 2006.
Meanwhile, "significant pressure" from the group of parents saw nine headteachers quit.
SWNS Four teaching assistants claim they were forced out of the school
When asked if he believed Ms Owens, a practicing Christian, could have been behind an attempt to Islamise the school, Mr Arif said he did not.
All four teaching assistants flatly deny being part of any "conspiracy".
The Trojan Horse plot came to light came to light in March last year, when a letter emerged urging Muslim parents to turn against "non-believers" including head teachers, while the four women were proceeding with an employment tribunal against the school in 2013.