Chigwell School's Under-13 footballers finished runners-up in the National Independent Association of Prep Schools six a-side competition.
The team qualified for the national finals held at Shrewsbury School on Sunday, after winning the regional round at King’s School, Ely, last month.
In the group stages Chigwell beat both Cheam and Dulwich Prep schools 2-0 before losing narrowly to Millfield Prep 3-2 having taken a 2-0 lead.
They then beat Prestfelde 1-0 and Eaton House 2-0 to finish as group runners-up.
Chigwell beat Hall Grove 3-0 in the semi-final before losing 1-0 to Millfield Prep in the final.
Chigwell School’s head of football, Creag Lawrence, said: "This was a great achievement for a small prep school in a national tournament where over 70 teams from across the country enter.
"The boys received many plaudits from spectators and coaches alike on how they played the game and were great ambassadors for Chigwell."
The school's Under-16 girls indoor hockey team continued the school's success as they were crowned Essex county champions in dramatic style with a 5-4 win over Coopers Coburn in a nail-biting final.
With the teams deadlocked at 4-4, Chigwell threw caution to the wind and replaced their goalkeeper with an extra outfield player.
The gamble paid off as, with just seconds left on the clock, Alisha Evans grabbed the winner to clinch the trophy.
The girls will now represent Essex at the regional finals competition at Essex University on November 30.
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