South Lanarkshire Council is seeking contractors for a schools modernisation programme that could be worth up to £240m.
The programme covers construction work across various primary schools throughout the South Lanarkshire Council Area.
The four year framework is expected to involve three contractors.
Work is scheduled to start in February 2011 and run for nine years.
South Lanarkshire Council expects to invite between five and nine firms to tender.
The deadline for expressions of interest is 12 May.