The race for the £1bn Hertfordshire Building Schools for the Future deal has been reduced to two with Balfour Beatty and Sir Robert McAlpine progressing to the final stage of bidding.
Vinci has been knocked out of the procurement process this week while Catalyst Lend Lease was eliminated last August.
The next stage of competitive dialogue is expected to finish at the end of May with a preferred bidder expected to be announced in late August.
The winner will initially work on eight schools in the town of Stevenage as the Home County kicks off its school renewal programme.
The deal is part of the Government’s £55 billion BSF scheme to rebuild or refurbish every state secondary school in England by 2020.