| 1992. 01. 08 | Imae Middle School Authorization (Gyeonggi Provincal Ordinance, Article 2217) | 
|---|---|
| 1992. 07. 23 | Completion of 22 classrooms | 
| 1992. 09. 01 |  Opening of Imae Middle School (9 students, 3 classrooms) Mr. Cha Youngsoon was appointed as the 1st principal.  | 
| 1993. 02. 16 |  The First Graduation Ceremony (34 graduate students - 21 boy students, 13 girl students)  | 
| 1993. 03. 04 | The First Entrance Ceremony (450 new students) | 
| 1994. 09. 01 | Mr. Kim Jaekwon was appointed as the 2nd Principal. | 
| 1997. 11. 30 | Extension of 4 classrooms and 1 special room | 
| 1998. 09. 01 | Mr. Jang Ilsoo was appointed as the 3rd principal. | 
| 1999. 09. 15 | Extension of 2 classrooms and 1 special room | 
| 2000. 02. 10 | Extension of 3 classrooms and 7 special rooms | 
| 2000. 03. 01 | Mr. Shin Sungkyoon was appointed as the 4th principal. | 
| 2003. 02. 05 | Extension of 10 classrooms | 
| 2004. 09. 01 | Mr. An Myeongyeong was appointed as the 5th principal. | 
| 2007. 03. 01 | Mr. Lee Misook was appointed as the 6th principal. | 
| 2009. 02. 10 | The 17th Ceremony | 
| 2009. 03. 02 | 2009 Entrance Ceremony (9 classes, 367 new students) | 
| 2009. 09. 07 | Level-based Classrooms Construction(11 classrooms) | 
| 2011. 02. 11 | 18th Graduation Ceremony (394 graduates, 8,629 in total through school history) | 
| 2011. 03. 02 | Entrance Ceremony (10 classes, 351 new students) | 
| 2012.02.09 | the 19th Graduation Ceremony(358 graduates, 8987 in total through school history) | 
| 2012.03 | Entrance Ceremony(9 classes, 349 new students) | 
| 2013.03.01 | 7th principal Sang Pil, Jang | 
| 2014.12.31 | First Prize in the best 100th curriculum (Ministry of Education) | 
| 2015.02.09 | 23th Graduates 353 students, total 10,102 students | 
| 2015.03.02 | Enterance ceremony 10 classes, 336 students | 
| 2016.03.02 | Enterance ceremony (10 classes, 336 students) | 
| 2016.09.01 | 8th principal Se Young, Park | 
| 2017.03.02 | Enterance ceremony (9 classes, 305 students) | 
| 2018.03.02 | Enterance ceremony (10 classes, 322 students) | 
| 2020.03.02 | Enterance ceremony (9 classes, 310 students) | 
| 2020.09.01 | 9th principal Soo Hyang, Cho |