Good Counsel and Madison, who have yet to be tested in going through December unbeaten, will get real tests when they play first-round games in the Washington Post Holiday Classic today at Georgetown University's McDon- ough Gymnasium.

Good Counsel, 8-0 and ranked No. 17, will open play against Interhigh League power No. 8 Coolidge (6-2) at 3:30.

The other first-round games include Bethesda-Chevy Chase (4-1) taking on No. 14 Potomac (Md.) (3-1) at 5:15, defending tournament champion No. 13 Springbrook (4-1) meeting No. 7 Madison (4-0) at 7 and No. 16 Chantilly (4-0) playing Flint Hill (4-3) in the finale at 8:45.

In first-round girls games No. 6 Fairfax (4-0) and All-Met Mara Cunningham will face No. 20 Whitman (4-0) at noon and No. 14 Lake Braddock will play Blair (5-0) at 1:45.

The girls final will be Friday at 5:15 followed by the boys semifinals at 7 and 8:45. The boys final will be Saturday at 8:45.

Tournament Director Craig Tartasky said he was very pleased with the quality of the competition.

"We had to prove ourselves the first year. Our goal now is to become the best tournament in the country," said Tartasky, who also is the president of the Michael J. Trilling Foundation, which provides scholarships through proceeds from the tournament.

"In a short time, we've gone from an idea to a very competitive, premier regional tournament. We had calls from teams interested in playing from as far away as Brooklyn. Next year, we will invite two out-of-state teams to play."

Springbrook relies on guards Chris McGuthrie, Tony Sawyer and Darren McLinton.

Good Counsel, hoping to eclipse its best single-season record of of 21-8 set in 1973, has had no problem winning. Senior guard Kurt Small is averaging 30 points. Coolidge, quick and aggressive defensively, relies on the inside scoring and rebounding of John Stuckey.

Fairfax has won three of four games by at least 16 points. It prefers the up-tempo game and could present problems for the smaller Vikings. Whitman, which has had four losing seasons in the past five, is off to its best start in years.