The season is down to the nuts and bolts of postseason play for much of the country, which has intensified the stakes and added an extra layer of vulnerability to the nation's top teams. So it's commendable that all six No. 1 teams have avoided upsets now for two weeks running and have yet to yield their top regional spots.

Here's a look at the rest of this week's NSCAA regional rankings for girls soccer.

Click here to view the girls national top 25 poll

Region I

Exeter is still hammering away on its ballooning winning streak, which is now at 40, the second-best girls streak in the nation. At 16-0-0, there hasn't been a better team in New England this fall, and according to the national polls (Exeter is No. 1 there too) there isn't a better girls team in the nation either. It'll take a 19-0-0 season to polish another unbeaten run. Central Catholic (17-0-0) and Champlain Valley Union (16-0-0) are working on winning streaks of their own.

1. Exeter (Exeter, N.H.)

2. Central Catholic (Lawrence, Mass.)

3. Champlain Valley Union (Hinesburg, Vt.)

4. Newton North (Newton, Mass.)

5. Bow (Bow, N.H.)

6. Glastonbury (Glastonbury, Conn.)

7. Wyndham (Wyndham, Maine)

8. Newburyport (Newburyport, Mass.)

9. Belchertown (Belchertown, Mass.)

10. Peoples Academy (Morrisville, Vt.)

11. Suffield (Suffield, Conn.)

12. Bangor (Bangor, Maine)

13. St. Joseph (Trumbull, Conn.)

14. Notre Dame Academy (Hingham, Mass.)

t15. LaSalle Academy (Providence, R.I.)

t15. Nashoba Regional (Bolton, Mass.)

Region II

A week after four of the top five changed deck chairs in a mad week in New York girls soccer, things have calmed down here considerably. Northport got comfy in its spot at No. 1 for the second straight week, though, in typical fashion, the calm won't hold for long. Monroe-Woodbury lost for the first time this season earlier this week, which should trigger a change at the top yet again next week.

1. Northport (Northport, N.Y.)

2. North Rockland (Theills, N.Y.)

3. Honeoye Falls Lima (Honeoye Falls, N.Y.)

4. South Side (Rockville Center, N.Y.)

5. Massapequa (Massapequa, N.Y.)

6. Monroe-Woodbury (Woodbury, N.Y.)

7. Kellenburg Memorial (Uniondale, N.Y.)

8. Williamsville South (Williamsville, N.Y.)

9. Guilderland (Guilderland, N.Y.)

10. Lockport (Lockport, N.Y.)

11. Schalmont (Schenectady, N.Y.)

12. Webster Thomas (Webster, N.Y.)

13. Briarcliff (Briarcliff Manor, N.Y.)

14. Sayville (Sayville, N.Y.)

15. Byram Hills (Armonk, N.Y.)

Region III

The longest girls winning streak in the nation has belonged to Allendale's Northern Highlands since September, when Idaho's Bishop Kelly drew to break its streak at 71 games. Northern Highlands broke the state record for consecutive wins in October at 61, and the program hasn't so much as tied a game since 2010. It was fitting that the team got No. 61 against Ramapo, the last team to beat Northern Highlands.

1. Northern Highlands (Allendale, N.J.)

2. Cumberland Valley (Mechanicsburg, Pa.)

3. Neshaminy (Langhorne, Pa.)

4. Eastern (Voorhees, N.J.)

5. Lenape (Medford, N.J.)

6. Montclair (Montclair, N.J.)

7. Moon (Moon Township, Pa.)

8. Immaculate Heart Academy (Township of Washington, N.J.)

9. Dover (Dover, Pa.)

10. Hunterdon Central (Flemington, N.J.)

11. Central Bucks East (Doylestown, Pa.)

12. Seneca Valley (Harmony, Pa.)

13. Dowingtown East (Exton, Pa.)

14. Ridge (Basking Ridge, Pa.)

15. Montgomery (Skillman, N.J.)

Region IV 

Houston held its top spot again in a region that's beginning to resemble its personal playground. At 20-0-1, Houston has held firm at No. 1 for weeks. 

1. Houston (Germantown, Tenn.)

2. Sacred Heart Academy (Louisville, Ky.)

3. Winfield (Winfield, W.Va.)

4. Father Ryan (Nashville, Tenn.)

5. McDonogh School (Owings Mills, Md.)

6. Charleston Catholic (Charleston, W.Va.)

7. Notre Dame Academy (Park Hills, Ky.)

8. Tates Creek (Lexington, Ky.)

9. Oldham County (Buckner, Ky.)

10. Sissonville (Charleston, W.Va.)

11. Farragut (Knoxville, Tenn.)

12. Franklin (Franklin, Tenn.)

13. Our Lady of Good Counsel (Olney, Md.)

14. Charleston Catholic (Charleston, W.Va.)

t15. Walt Whitman (Bethesda, Md.)

t15. Morgantown (Morgantown, W.Va.)

Region V

Rocky River plunges into the Ohio state playoffs with confidence to spare along with its 18-0-1 mark that has rarely been challenged this year. Fishers is up to No. 2 despite a pair of losses, while Minnetonka makes a splash at No. 6 with a 14-2-2 record.

1. Rocky River (Rocky River, Ohio)

2. Fishers (Fishers, Ind.)

3. Walsh Jesuit (Cuyahoga Falls, Ohio)

4. Burnsville (Burnsville, Minn.)

5. Pickerington North (Pickerington, Ohio)

6. Minnetonka (Minnetonka, Minn.)

7. Twinsburg (Twinsburg, Ohio)

8. Avon (Avon, Ind.)

9. Reitz Memorial (Evansville, Ind.)

10. St. Ursula Academy (Cincinnati, Ohio)

11. Zionsville (Zionsville, Ind.)

12. Carmel (Carmel, Ind.)

13. Lakeville North (Lakeville, Minn.)

14. Notre Dame Academy (Toledo, Ohio)

15. Brebeuf Jesuit (Indianapolis, Ind.)

Region VI

While the top five has been unchanged for two weeks now, No. 6 Brighton should garner plenty of praise for becoming a national player late in the season. Brighton has a 16-2-1 record and has upheld its reputation in Utah this season.

1. Maria Carrillo (Santa Rosa, Calif.)

2. Bishop Gorman (Las Vegas, Nev.)

3. Tigard (Tigard, Ore.)

4. Skyline (Sammamish, Wash.)

5. Jesuit (Portland, Ore.)

6. Brighton (Cottonwood Heights, Utah)

7. Montgomery (Santa Rosa, Calif.)

8. Kentridge (Kentridge, Wash.)

9. Eldorado (Albuquerque, N.M.)

10. Timpanogos (Orem, Utah)

11. St. Pius (Albuquerque, N.M.)

12. Issaquah (Issaquah, Wash.)

13. Sunset (Beaverton, Ore.)

14. Boise (Boise, Idaho)

t15. Alta (Sandy, Utah)

t15. Arbor View (Las Vegas, Nev.)