| Title | Terms | Created |
| Sungwoo's GRE (Barron's, scrambled): Day 4 | 182 | March 16, 2009 |
| Sungwoo's GRE (Barron's, scrambled): Day 3 | 177 | March 16, 2009 |
| Sungwoo's GRE (Barron's, scrambled): Day 2 | 174 | March 16, 2009 |
| Sungwoo's GRE (Barron's, scrambled): Day 1 | 170 | March 16, 2009 |
| Sungwoo's GRE Vocabulary (Barron's): H | 108 | March 24, 2008 |
| Sungwoo's GRE Vocabulary (Barron's): F | 194 | March 17, 2008 |
| Sungwoo's GRE Vocabulary (Barron's): E | 254 | March 17, 2008 |
| Sungwoo's GRE Vocabulary (Barron's): D | 283 | March 17, 2008 |
| Sungwoo's GRE Vocabulary (Barron's): C | 394 | March 17, 2008 |
| Sungwoo's GRE Vocabulary (Barron's): B | 153 | March 17, 2008 |
| Sungwoo's GRE Vocabulary (Barron's): A | 363 | March 17, 2008 |