South Kitsap athletic director Ed Santos told reporters at Friday’s football game at Olympia that two Lacey schools — North Thurston and Timberline — and Capital and Yelm would join the Narrows League for the 2010-11 school year.

Santos said league members approved the additions this week. The Narrows will be a 15-team, multi-classification league next year.

He said the Washington Interscholastic Activities Association will announce cutoff numbers for Class 4A, 3A and others Dec. 1. League members will meet next week to examine the Narrows’ configuration. Arrangements could be different for each sport, according to Santos. For example, the Narrows is split into the Bay and Bridge Division for basketball this year, while all 11 teams play in one football league.

Santos said River Ridge likely will remain in the 2A classification and stick in the Evergreen Conference. He also made no promises there would be a 3A and 4A division, but added not having separate divisions to separate the classifications would be problematic for sports such as track that allocate a certain number of individual berths out of league into districts.

Central Kitsap and South Kitsap essentially are the only locks to be in the 4A classification, Santos said. Central Kitsap, Foss, Mount Tahoma, Olympia, Shelton, South Kitsap and Stadium all met the 1,281 4A-enrollment threshold last year. Bellarmine Prep and Gig Harbor traditionally have opted up to play in 4A, but might not do that with a 3A option.

North Thurston, Timberline, Capital and Yelm currently belong to the Class 3A Olympic/Western Cascade League, which includes Bremerton. It is unclear how that league will be realigned.

— Port Orchard Independent Sports Editor Chris Chancellor provided the information in this report.