Concerns about the proposed expansion to Byron Court Primary School have escalated to the Department of Education after residents said children's education was being compromised to create new school spaces.
Plans were approved last year to expand the capacity of the 'Outstanding' Byron Court Primary School to five form entry despite overwhelming disapproval from the students' parents.
And after raising the issue to Secretary of State for Education Nicky Morgan in the House of Commons last year, Mr Gardiner is pushing for answers.
He said: "I understand the constraints Brent Council is operating under, but the officers from Brent Local Authority appeared more concerned with their statutory obligation to provide new school places than with the negative educational impact the proposed expansion to Byron Court would have on pupils."
Mr Gardiner has also written to Brent council leader Cllr Muhammed Butt to request the cabinet rejects the officers' recommendation to expand the school.
The Brent North MP was accompanied to the Department of Education by Martin Dickens and Suzanne D’Souza, chairs of the Parents Against Byron School Expansion and Sudbury Court Residents Association respectively.
Fears expansion will harm 'Outstanding' school
Last year's application was met with strong negativity from both groups, and approximately 85% of parents opposed the plans.
The expansion from a three form entry school would mean increasing capacity from 630 to 1,050 by 2020, adding an additional two classes per year.
Ofsted rated the school 'Outstanding' on their previous inspection in 2012, but expanding the school risks lowering educational standards, by paying less attention to students.
There are also fears over traffic congestion and flood risks as Brent Council weigh up the planning application for the expansion of the school.