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UPA Junior Open National Championships
| Year | Champion | 2nd Place | Finals Score | Semi-Finalist | Semi-Finalist | Location |
| 1998 | Amherst Regional HS (Amherst, MA) |
Brooklyn Tech HS (Brooklyn, NY) |
16-14 | MOHO (Seattle, WA) |
Scarsdale HS (Scarsdale, NY) |
Maplewood, NJ |
| 1999 | Univ. School of Nashville HS (Nashville, TN) |
MOHO (Seattle, WA) |
17-14 | Amherst Regional HS (Amherst, MA) |
Brooklyn Tech HS (Brooklyn, NY) |
Oaks, PA |
| 2000 | MOHO (Seattle, WA) |
Newton North HS (Newton, MA) |
16-14 | Amherst Regional HS (Amherst, MA) |
Midwest Express (Madison, WI) |
Oaks, PA |
| 2001 | Paideia School (Atlanta, GA) |
Amherst Regional HS (Amherst, MA) |
12-7 | Scarsdale HS (Scarsdale, NY) |
Northfield Mt. Hermon HS (Northfield, MA) |
Nashville, TN |
| 2002 | Paideia School (Atlanta) |
Amherst Regional HS (Amherst, MA) |
15-12 | Northfield Mt. Hermon HS (Northfield, MA) |
Newton North HS (Newton, MA) |
Atlanta, GA |
| 2003 | Amherst Regional HS (Amherst, MA) |
Paideia School (Atlanta, GA) |
15-10 | Chapel Hill HS (Chapel Hill, NC) |
Northfield Mt. Hermon HS (Northfield, MA) |
Birmingham, AL |
| 2004 | Amherst Regional HS (Amherst, MA) |
Northwest HS (Seattle, WA) |
15-5 | South Eugene HS (Eugene, OR) |
Northfield Mt. Hermon HS (Northfield, MA) |
Corvallis, OR |