Seventeen of the 93 city schools are offering the ritually-slaughtered meat in their canteens after at least 10 per cent of parents backed the move.
But the British National Party (BNP) is calling on Stoke-on-Trent City Council to ban the halal meat on animal welfare grounds.
BNP group leader Councillor Michael Coleman today denied the campaign is an attack on Muslims.
Instead he urged councillors to stop the "barbaric method of slaughter".
Under halal rules, the animals are not stunned by a bolt or electric shock before they are slaughtered. Mr Coleman, pictured, said: "We were contacted by some mums from Tunstall, who were angry that their children were being served this meat without their knowledge.
"The council tries to make out that it is just an option, but I don't believe that is the case in all these schools.
"I think it is just being served up and pupils are not even aware that they are eating it. It's against the law for me to kill an animal in that way, but it's fine for a Muslim or a Jew to do it. It's an unacceptable state of affairs."
Halal meat has been provided to some city schools since 2000.
It is estimated that halal meat accounts for about four per cent of the meat served in the 17 schools.