The Greenies enjoyed the spotlight as the NCAA juniors team of the then De La Salle College in Manila (the High School in DLSC was phased out effective 1968 and all its grade school graduates went to La Salle Green Hills High School), winning 8 general championships along the way, until both DLSU and LSGH simultaneously formally withdrew from the NCAA in a press conference in September 1980 effective after the then ongoing 1980-81 NCAA Season.

LSGH took over the slot of the phased out De La Salle College High School which also had the same monikers-the Greenies.

[citation needed] But after a thorough review by the then UAAP board, they finally accepted La Salle as the eighth member.

[citation needed] Ateneo de Manila also rejected LSGH's application after LSGH's athletes were involved in various riots with some Ateneo Blue Eaglets while they were in the NCAA, this delayed DLSU's spot in the UAAP, thus forcing DLSU to choose the newly established De La Salle–Santiago Zobel School as their representatives in the Juniors' Division.

But in the annual Fil-Oil/ Flying V Homegrown Invitational which started in 2005, the La Salle Greenies were selected to be the juniors team of the De La Salle Green Archers, thus being the first time the Greenies played alongside the Green Archers since 1981.