The UAAP Season 78 high school volleyball tournament started on August 22, 2015. The tournament venue is the Adamson University Gym in San Marcelino St., Ermita, Manila. Adamson is the tournament host. The number of participating schools in the boys' and girls' tournaments both increased to seven. Far Eastern University fielded boys' and girls' volleyball teams beginning season 77. Since there are now seven participating schools, the tournaments have a Final Four format. The UAAP Board decided to move the high school volleyball tournaments from 2nd semester to 1st semester due to the basketball juniors tournament being moved from the 1st semester to 2nd semester.