For the defending champions, J.H. Lallawmima's scored a brace followed by goals from Lalthansanga, Lalnunhlua and Ramhlunchhunga to ensure an easy win.
The defending champions will meet Nagaland's Greenwood High School, who beat National Cadet Corps, Maharashtra, 3-1 after extra time. The semi-final will be played Tuesday.
NCC, Maharashtra, took the lead through Rushikesh More in the 18th minute before Tokavi levelled the scoring. Kito struck a brace in extra time to clinch the match for the Nagaland side in the first quarter-final.
Earlier in a Pool E match, Nilamani English School from Manipur thumped New Delhi's Air Force School 9-0.