Tournament Format
- Competitors usually join by contacting Focal Media Arts by telephone, and are directly slotted for the televised Weekly Finals. However, there are also reports that nontelevised provincial rounds have been held.
- Each season determines its elementary, high school, and college level Grand Champions in a single-elimination tournament with 4 rounds (called the Weekly, Monthly, Quarterly, and Grand Finals). Only the top competitor advances to the next round.
- The Weekly and Quarterly Finals feature 4 competitors each, while the Monthly and Grand Finals each field 3 competitors. However, there have been exceptions to this allocation for rounds prior to the Grand Finals.
- Each competing elementary and high school is represented by 2 students (except for elementary teams from Seasons 1 and 2, which fielded 3 students each). The college competition featured an individual representing the school, except from Season 8 (1999-2000 season) onwards, when 2-person teams were adopted.
- Alternates were allowed for elementary and high school competitors. But once used in competition, the alternate must continue to compete, taking the displaced student's place, for the rest of the competition.
- In Season 9 (2000-2001 season), the format for the college level was changed to the returning-champion format similar to that of Jeopardy!. The winner will return on the next episode to face a new set of challengers until they lost.
Read more about this topic: Battle Of The Brains (Filipino TV Series)