North Kesteven School has met with unions amid concerns over a £170,000 cut to its funding and potential job losses.
A consultation has been launched to address the options with unions and staff at the North Hykeham school.
The academy on Moor Lane previously announced a number of posts could be lost, with unions warning eight teachers and 12 support staff could go.
A school spokesperson said on Tuesday, March 22: “North Kesteven School met with unions yesterday in consultation over its proposals to make a number of posts redundant.
“These proposals have been made in response to a substantial cut in funding resulting in a potential financial deficit.
“The academy reported that the meetings had been open and constructive, and that the school is working hard with unions to find ways to avoid or minimise redundancies.
“The academy remains confident that the measures will not affect its excellent teaching or broad curriculum offer that combines strong academic and vocational courses.”