Sneinton's MP, Chris Leslie, has said leaflets being handed to residents urging them to remove their children from lessons covering LGBT issues are "worrying".
The MP for Nottingham East, which covers Sneinton, stressed it was a parent's right to withdraw their child from new lessons being introduced on relationships and sex education, but warned children would miss out on learning about "crucial issues".
The Society for the Protection of Unborn Children is behind writing the leaflet called "Safe at School Bulletin".
A prepared letter parents can send to schools to ask for their children to be excluded from the lessons has also been included in the delivery.
But the society has said it is not responsible for posting out the leaflets or letters to residents in Sneinton specifically.
The leaflet claims the government has ignored parents' views on plans for new relationship and sex education lessons which are coming into schools in England in September 2020.
In his latest newsletter, Mr Leslie addressed the issue and said: "There have been some reports this week of leaflets being distributed in Sneinton in particular by unknown sources designed to urge parents to remove their children from local school relationship ‘PSE’ lessons.
"While parents do have this right, it is worrying that those with a particular agenda are attempting to prevent young people from learning about crucial issues on relationships and health in an appropriate and balanced school environment."
The leaflets being posted to Sneinton residents follows large protests in Birmingham against the teaching of LGBT relationships at primary schools.
Mr Leslie added: "I would not wish to see some of the more extreme views illustrated in recent months outside Birmingham schools being promulgated here in Nottingham.
"We should trust our schools and teachers to educated all young people in social and relationship education in accordance with the law."
Residents in Sneinton also criticised the letters and leaflets, saying they were "out of date".
