Greater Atlanta Christian’s boys basketball team failed in its bid to win three straight state championships when upset while ranked No. 1 in the Class AA quarterfinals last season against Manchester.

GAC returned to top of the rankings again this week after previous No. 1 Manchester lost to Spencer on Tuesday.

The AA champion in 2010 and 2011 under coach Eddie Martin, GAC has won 10 straight games, none closer than a 30-point margin. GAC’s three losses are to teams in higher classifications.

One other No. 1-ranked team lost last week. That was Columbia’s girls in Class AAAA.

Columbia held their top rating despite a 64-62 loss to Redan, which climbed from No. 4 to No. 2. The DeKalb County and Region 6-AAAA rivals split their two regular-season meeting, but Columbia earns the higher ranking based on its 65-33 victory in the first game against Redan as well as a slightly more difficult schedule.

Class A No. 1 Southwest Atlanta Christian avenged its only loss to a Georgia team in a big way on Saturday. The Warriors routed Darlington 64-32 on Saturday, less than three weeks after Darlington won the first meeting 47-46. Darlington fell from No. 2 to No. 5.

The top game this week takes place Tuesday, when No. 1 Columbia plays at No. 2 Marist in a Region 6-AAAA contest. Columbia won the first meeting 46-45 on Jan. 12.

There are six new boys teams in the rankings. Chattahoochee replaced Archer in AAAAAA; Northside-Columbus and Stephenson replaced Bainbridge and McIntosh in AAAAA; Woodward Academy replaced Cedar Grove in AAA; McIntosh County Academy replaced Taylor County in AA; and Excel Christian replaced Seminole County in A.

There were three new girls teams in the rankings. Mary Persons replaced Dutchtown in Class AAAA; Dodge County replaced Dawson County in AAA; and Paideia replaced Calvary Day in A. None has been ranked this season.

Class AAAAAA

1. Tift County (18-4)

2. North Cobb (20-4)

3. Shiloh (18-5)

4. Norcross (17-6)

5. North Gwinnett (18-5)

6. Hillgrove (20-3)

7. Wheeler (16-6)

8. Westlake (20-4)

9. Chattahoochee (18-5)

10. Peachtree Ridge (15-8)

Class AAAAA

1. Miller Grove (21-3)

2. Allatoona (19-5)

3. Effingham County (19-4)

4. Mays (16-5)

5. Tucker (16-7)

6. Mount Zion-Jonesboro (18-5)

7. Northside-Columbus (19-4)

8. Lithia Springs (18-6)

9. Sequoyah (18-6)

10. Stephenson (12-10)

Class AAAA

1. Columbia (20-2)

2. Marist (18-2)

3. Eagle’s Landing (19-5)

4. Glenn Hills (22-1)

5. Jonesboro (19-4)

6. South Atlanta (18-4)

7. Statesboro (21-3)

8. Monroe (19-3)

9. Westover (16-5)

10. Grady (16-6)

Class AAA

1. Cartersville (22-0)

2. Buford (17-5)

3. Johnson-Savannah (17-5)

4. Savannah (19-3)

5. Morgan County (18-5)

6. Washington County (19-4)

7. North Hall (21-2)

8. Woodward Academy (18-4)

9. Thomson (15-5)

10. Dawson County (20-3)

Class AA

1. Greater Atlanta Christian (21-3)

2. Vidalia (22-1)

3. Bleckley County (21-2)

4. Westside-Augusta (16-3)

5. Manchester (20-3)

6. Laney (15-6)

7. Dublin (17-6)

8. Jordan (13-5)

9. Pelham (16-7)

10. McIntosh County Academy (15-8)

Class A

1. North Cobb Christian (20-2)

2. Wilkinson County (21-1)

3. W.D. Mohammed (21-1)

4. Mitchell County (20-3)

5. Greenforest Christian (18-4)

6. Athens Christian (17-3)

7. Turner County (17-4)

8. Aquinas (17-6)

9. Wilcox County (18-3)

10. Excel Christian (23-1)

GIRLS

Class AAAAAA

1. North Gwinnett (21-1)

2. Norcross (19-4)

3. Parkview (23-0)

4. Cherokee (22-1)

5. Alpharetta (19-4)

6. North Cobb (21-3)

7. Woodstock (17-6)

8. North Forsyth (20-3)

9. Hillgrove (17-6)

10. Hughes (19-2)

Class AAAAA

1. Tucker (20-3)

2. Stephenson (21-3)

3. Miller Grove (19-3)

4. McIntosh (21-2)

5. Kell (18-2)

6. Creekview (20-4)

7. Cedar Shoals (20-2)

8. Osborne (18-5)

9. Southwest DeKalb (15-8)

10. Flowery Branch (21-2)

Class AAAA

1. Columbia (18-3)

2. Redan (19-1)

3. Cross Creek (22-0)

4. Woodland-Stockbridge (23-1)

5. Jonesboro (19-4)

6. Fayette County (15-5)

7. Sandy Creek (18-4)

8. Marist (13-5)

9. Mary Persons (19-2)

10. South Effingham (23-1)

Class AAA

1. Buford (16-4)

2. Washington County (21-1)

3. St. Pius (20-3)

4. North Oconee (21-2)

5. Sonoraville (21-1)

6. Beach (20-3)

7. Chapel Hill (20-3)

8. Elbert County (18-4)

9. Decatur (17-6)

10. Dodge County (18-4)

Class AA

1. Wesleyan (20-4)

2. Laney (23-0)

3. Kendrick (23-0)

4. Calhoun (20-1)

5. Pelham (20-3)

6. Thomasville (19-2)

7. Greater Atlanta Christian (17-6)

8. Dublin (21-3)

9. Model (17-5)

10. Bremen (17-5)

Class A

1. SW Atlanta Christian (22-2)

2. Randolph-Clay (21-2)

3. Holy Innocents’ (17-5)

4. Gordon Lee (18-5)

5. Darlington (16-6)

6. George Walton Academy (18-3)

7. St. Francis (14-8)

8. Towns County (18-4)

9. Paideia (18-4)

10. Turner County (17-4)