Boston ? The Bowl Championship Series still is crunching numbers for its new formula to determine which teams will play for the national championship, a change prompted by last season’s split title.

The BCS had considered unveiling its new math this week at the Collegiate Commissioners Association meetings in Boston.

“We’re proceeding in a deliberate fashion because … the poll has been a subject of a lot of controversy and we want to make sure that by making changes we’re not creating different types of problems from perhaps what we had in the past,” Big 12 Conference commissioner Kevin Weiberg said in an interview Tuesday after a day of CCA meetings. “We want to receive some assurance that the changes that we may have in mind are sound from a mathematical standpoint.”

Weiberg said the BCS wanted to have its new formula in place before conference football media days began.

“Ideally that means no later than the third week in July,” said Weiberg, the incoming BCS coordinator.

This season, the BCS formula will emphasize the Associated Press media poll and USA Today/ESPN coaches polls, while lessening the influence of computer rankings.

Weiberg said the BCS was looking at a formula that would take into account not just where a team ranked in the human polls, but also how many votes it received.

Last year, the BCS gave equal weight to the average of two human polls and the average of seven computer rankings. Also factored in were strength of schedule and total losses, with bonus points awarded for wins against teams in the top 10 of the BCS standings.

The BCS wants a simpler formula with fewer redundancies.

“I think there is a general feeling that those components that have been added over the past four or five years have resulted in more complexity to the poll and its calculation,” Weiberg said. “Specifically, that would be the separate strength of schedule component and the quality win component.”

Strength of schedule still would be a big part, Weiberg said.

“First of all it’s a very prominent element of all the computer polls,” he said. “And I believe it is still considered as part of the human polls as well.”