It was a battle of equals for the most part but it was heartbreak for NCC right at the end as Ramfangliana (70+2) popped up seconds before the final whistle to punch in a cross.
The winners will face-off with Betkuchi High School, Assam in the clash for the title.
In the U-17 boys' event, Govt Model School, Chandigarh, thrashed Goa 10-0. Gurkirat and Anil scored a brace each for Chandigarh.
Indian School, Oman were handed a 2-0 defeat by St Stanlisus of Bihar. The Oman team, which comprised entirely of sons of Indian immigrants, had a hard time in their opening match.
The boys from Bihar were much fitter and despite enjoying a substantial height advantage, Oman were on the backfoot for the most part.
Among the girls, Ratanbala Devi scored four goals as RMSV Vidyalaya, Manipur, swamped Ahlcon Public School, Delhi 7-0. Sunita Devi, Hemolata Devi and Ranajans Chanu also found the net for Manipur.
Dona Paula High School, Goa 4 (Anika Coelho 11th, 25th, 55th; Simran Faterpekar 58th) 4 defeated Ahlcon Public School, Delhi 1 (Tanvi Singh 42nd) (Girls)
RMSV Vidyalaya, Nambad, Manipur 7 (Sunita Devi 52nd; Hemolata Devi 33rd; Ranjana Chanu 15th; Ratanbala Devi 30th, 31st, 36th, 45th) defeated Burguri High School, Assam 0
Bihar vs Indian School, Oman (U-17) NCC (NER) vs Government Chawmgfianga Middle School, Mizoram (U-14 SF)
MP 5 vs The Air Force School 0 (Girls) Government Model School, Chandigarh 10 beat Kortaleen School, Goa 0.