The spokesman for Guernsey's three grant-aided colleges has warned new States funding arrangements being announced on Monday must not turn them into "elitist institutions".
Blanchelande, Elizabeth and the Ladies' colleges say they've been unable to reach agreement with the Education Sport and Culture Committee over how they will be funded from 2019.
Currently, taxpayers pay for 52 special place holders in each school year, who are currently picked to attend the schools based on the 11 plus, which ends in 2019.
The government has gradually reduced funding by nearly £1m in the seven years to 2018.
Colleges spokesman Allister Langlois said the future arrangements must ensure the colleges are "inclusive institutions".
"They have been for a long time, there's a lot of urban myth about it only being for academically gifted children and so on.
"We want to avoid any model which turns them into elitist institutions."