Old Earth Primary and Ravenscliffe High shared the award for Green School, sponsored by Provident Insurance at the Courier's Community and Environment celebration.
The judges said: "We were absolutely unable to separate these two contenders."
But being joint winners did not stop either school being delighted with the result.
Martin Moorman, deputy head at Ravenscliffe, Halifax, said: "We won the Green Flag award this year and the Yorkshire in Bloom Young People's category so this is a treble - we don't have a trophy cabinet but I suppose now we need one."
And Paul Reynolds, head of Old Earth, Elland, said: "Being green is so important in this day and age and it's a battle for hearts and minds to get that message across at schools."
He added, over the next year the school would be implementing 36 solar panels and buying two mini-buses which can run on bio-diesel.
Their award was picked up by two former students Marcus Stapley and Alice Smith.