Barnard Castle School will be back at Twickenham on April 3 after reaching the final of the Daily Mail Under 18s Cup for the second successive season.
They lost to Oakham School last year and this time face Bristol-based Colston's Collegiate, who have been excluded from the competition in recent seasons after winning it three times.
Barnard Castle won their semi-final 17-12 against Campion School, Hornchurch, after being 17-0 up at half-time through tries by Matthew Tait, Phil Dawson and Ross Batty.
Victorious captain, Jim Carver said: "This is my proudest moment and I can't wait to be leading the lads out at Twickenham."
Barnard Castle coach, Martyn Pepper said: "I was delighted with the first-half performance. Over the 80 minutes I think that we did deserve the victory.
"The set pieces went well and the power in the forwards proved too much for Campion as two of our tries came from strong work in the pack."
Tait, who added a conversion, is due to be in South Africa with England for the IRB Under-19 World Championships at the time of the final.
But Pepper has not given up hope of having him in the side at Twickenham.
"It's something we need to talk to Matthew about," he said.
"He has been selected by England, which is obviously a great honour. But this is his last year at school, he's playing with his mates and that is also a big incentive for him.
"We need to consider all the options - even flying him back for the final."
Colston's have left their two internationals out of their Daily Mail matches, knowing they would not be available for the final. They beat RGS Lancaster 24-7 in their semi.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules hereComments are closed on this article