The following teams took part in the Division I tournament. Group A played in Megeve & Saint-Gervais, France between December 14 and December 20, 2009. Group B played in Gdansk, Poland between December 14 and December 20, 2009:
Group A[]
| Team | GP | W | OTW | OTL | L | GF | GA | DIF | Pts |
|---|---|---|---|---|---|---|---|---|---|
 Germany
|
5 | 5 | 0 | 0 | 0 | 27 | 3 | 24 | 15 |
 Denmark
|
5 | 4 | 0 | 0 | 1 | 21 | 9 | 12 | 12 |
 Slovenia
|
5 | 2 | 1 | 0 | 2 | 8 | 12 | -4 | 8 |
 Ukraine
|
5 | 1 | 0 | 1 | 3 | 15 | 23 | -8 | 4 |
 Japan
|
5 | 1 | 0 | 0 | 4 | 9 | 26 | -17 | 3 |
 France
|
5 | 1 | 0 | 0 | 4 | 9 | 16 | -7 | 3 |
Germany was promoted to the Top Division and France was relegated to Division II for the 2011 World Junior Ice Hockey Championships.
Group B[]
| Team | GP | W | OTW | OTL | L | GF | GA | DIF | Pts |
|---|---|---|---|---|---|---|---|---|---|
 Norway
|
5 | 4 | 1 | 0 | 0 | 33 | 8 | 25 | 14 |
 Belarus
|
5 | 3 | 0 | 2 | 0 | 30 | 12 | 18 | 11 |
 Italy
|
5 | 2 | 1 | 0 | 2 | 8 | 8 | 0 | 8 |
 Kazakhstan
|
5 | 2 | 0 | 0 | 3 | 20 | 16 | 4 | 6 |
 Croatia
|
5 | 1 | 0 | 0 | 4 | 14 | 51 | -37 | 3 |
 Poland
|
5 | 1 | 0 | 0 | 4 | 12 | 22 | -10 | 3 |
Norway was promoted to the Top Division and Poland was relegated to Division II for the 2011 World Junior Ice Hockey Championships.