Liverpool-based Nobles Construction has completed the £6m development of All Saints Catholic Primary School in Bootle.
Head teacher Stephen Sanderson was awarded a CBE in 2006 for his services to education. He said: "We had German delegates here last week and they were astounded by the facilities on offer.
"As one of the country's most high tech sustainable centres, we knew it compared favourably to primary schools in the UK, but it was interesting to hear there is nothing in Germany to stand up to comparison.
"It's taken five years to see the project through from funding and planning applications to completion and we're delighted with the result.
Peter Linford, director at Nobles Construction, added: "We won the All Saints job following a tough tendering process, where we beat-off competition from 26 contractors across Europe. As a local business, it was a massive boost to win such an important job and to keep the work in our area."
The new All Saints Catholic Primary School is located on the site of the old St James's Primary in Chestnut Grove. It was formed in 2007 following the merger of St James's and St Joan of Arc. It also comprises pupils from St Winefride's and St Richard's following the two primaries closure in 2005.
Nobles Construction was awarded the contract to build the new environmentally-friendly school in July 2008.
All Saints forms part of the government's 'Schools for the Future' programme and will aid its commitment to reducing carbon emissions. The new 'green' school will generate its own power and be able to conserve energy.