Brent Council is planning to close six of the borough's 12 libraries next year.
They are Barham Park, Cricklewood, Neasden, Tokyngton, Kensal Rise and Preston. It is not yet known if library staff will lose their jobs.
This week a teacher from Barham Primary School explained why their nearby library is so valuable to its pupils.
Karen Said Hamdi said: "It is a huge valuable local resource for us as a school.
"Children outside of school use it to enhance their learning - borrowing books to enjoy and doing research for homework projects as many don't have access to the internet at home.
"Also the staff are an invaluable resource because many of our parents have
English as their second language and they can talk to them for help."
The closures are expected to save the Labour-run council £1million.
Brent's Liberal Democrat opposition group also slammed the plans to close Barham Park Library - just weeks after it reopened following a major refurbishment which cost £200,000.
Councillor Paul Lorber, ward councillor for Sudbury and leader of Brent Liberal Democrats, said: "It is just crazy for Labour to want to close a newly refurbished library and children's centre. This is just unbelievable.
"It is clear Labour has been waiting for years to implement their library closure plans.
"I think a lot of people are going to be bitterly disappointed to hear this news."
A public meeting was due to be held last night (December 1) for residents to put their questions to Councillor Ann John, the leader of the council, and Councillor James Powney, lead member for environment, planning and culture.
The next planned public meeting will be held on January 6 at Brent Town Hall.
Consultation began on Monday and runs until March 4.
Residents can read about the proposals and fill out a questionnaire by visiting www.brent.gov.uk/library-transformation.
People can also request a paper version by calling Cultural Services on 020 8937 5619.