Parents at Batley High School have called in a row around a teacher who showed the students a caricature of the Prophet Mohammed to calm down.
A petition in support of the teacher who apologized after showing the cartoon, widely taken from the French satirical newspaper Charlie Hebdohas passed more than 60,000 signatures.
The series has protests outside of that West Yorkshire School that apologized and suspended the teacher involved on Thursday pending an investigation.
On Sunday was Yunus Lunat, a spokesman for the Batley Parents and community partnership said the teacher failed to realize that the picture was "full of Islamophobic tropics".
He said: "We believe that in a democratic society everyone has the right to opinion and expression. However, we as parents and citizens also believe that those rights come with responsibility.
"We as parents and citizens are determined that our children can go to school without their beliefs – which are protected by law – or their culture being ridiculed, insulted or slandered."
He went on to say that children "are allowed to engage with challenging ideas such as blasphemy without their teachers having to resort to anti-Islamic material," which "only serves to marginalize Muslim communities and instill anti-Islamic sentiments".
However, he added, “We invest in dialogue and legitimate engagement. All such threats against the school and the affected staff undermine our efforts and completely contradict our values as affected parents, citizens and Muslims.
"We therefore demand calm in order to allow a fruitful dialogue and space for a transparent investigation."
Protesters had gathered in front of the school gates on Thursday and FridayThey claimed the school did not take the problem seriously and said they would continue to demonstrate until the teacher was fired.
However, the school is now facing demands to reinstate the teacher after a petition in support of him received more than 60,000 signatures in three days.
West Yorkshire Police said a number of complaints were made related to the incident.
Officers took part in both protests after dozens of people stood outside the school, partially blocking the street.
A police spokesman said: "As would be expected given the high profile of the events, there have been a number of complaints on various issues related to the issue.
"These are under further scrutiny, but this is an ongoing situation."