Stamford Endowed Schools are hoping to win permission to allow members of the public access to top quality sports facilities.
The schools have submitted an application to South Kesteven District Council to change the planning restrictions on their £6.1m sports centre and pool off Conduit Road.
The facility is currently used by pupils, staff and a limited number of sports clubs in the town. Public membership is not permitted.
The schools have been approached by the town, district and county council about expanding the centre’s use.
Principal Stephen Roberts said: “It has long been our ambition to give more local people the opportunity to use the centre and pool.
“This would greatly improve the provision of sport and leisure facilities in the town, particularly for serious swimmers.
“Our schools are keen to enhance life in Stamford wherever possible and many of our facilities are already widely used by local squash, badminton and swimming clubs. ”
The Endowed Schools are suggesting the centre could be used by a membership limited to 300 people on top of current users.
Neighbouring residents would be given priority.
The facility would only be open outside of school hours and users would be able to use the schools car parks which are 250 and 400 metres away.
Residents in the neighbouring Conduit Road, which is the main access way to the facility, have raised concerns about increased traffic and parking in their street.
The school wrote to the residents of 90 neighbouring homes last year inviting them to attend a consultation meeting about the proposals which 35 people attended.
Following the meeting access gates were locked to reduce parents picking up their children and signs put up to signal the passing bays.
To reduce further problems the school would carry out random patrols checking where people park and residents would be asked to report any sports centre users parking on the road.