| Year | Events |
| 1941 | Colégio Dom Bosco (Yuet Wah) was originally an orphanage (Asilo dos Orfaos) which was run by the Salesians, specifically accommodating Portuguese orphans. The groundbreaking ceremony of the school premises was held in 1941. |
| 1949 | The foundation stone laying ceremony of the premises was held, and the school was named as Colégio Dom Bosco de Artes Oficios. |
| 1951 | Part of the school building was started to use. |
| 1960 |
The school set up preparatory courses and provided mechanics, typing, computer and other programmes. The Choir, “Little Singers of the Wooden Cross” which was founded by Fr. Cesare Brianza was not only an extra-curricular activity, but also a well-known choir and was frequently invited to give performance in Macau and abroad. |
| 1963 | The construction of the school was completed. |
| 1976 | The school cancelled the industrial course and set up junior high programmes. |
| 1982 | The Portuguese kindergarten was established. |
| 1991 | The Chinese Section was founded in 1991 and Fr. Luigi Rubini SDB became the principal of the Chinese Section. |
| 1999 | Fr. Francis Hung, SDB took over the post of principal from Fr. Luigi Rubini SDB.
The first batch of students graduated and the Portuguese Section was closed in the same year. |
| 2000 | The school merged with Yuet Wah College, and finally named as COLÉGIO DOM BOSCO (YUET WAH). After the merger, Yuet Wah College moved all the primary students of the English and the Chinese Sections to our school. |
| 2001 | Our school exchanged all 10 kindergarten classes with the 10 primary classes from Colégio Perpétuo Socorro Chan Sui Ki (Sucursal). |
| 2003 | Fr. Alphonsus Cheng, SDB took over the post of principal from Fr. Francis Hung, SDB. |
| 2004 | Fr. Denis Kong, SDB took over the post of supervisor from Fr. Pedro Leong, SDB.
The examination system changed from 4 semesters a year into 2 semesters a year. The Wind Band and Parents and Teachers Association were founded. |
| 2005 | Our school joined the Comprehensive School Evaluation Programme of DSEJ. |
| 2006 | Medical Room and the School Health Promotion Staff were subsidised by the DSEJ. |
| 2007 | Information technology education staff, School leisure activity specialist, Reading promotion staff and Pastoral assistant were recruited. Parents and teachers were invited to be the members of the school board. |
| 2008 | Fr. Thomas Lee, SDB, took over the post of the principal from Fr. Alphonsus, SDB.
Ms. Lai I Fan and Mr. Ip Hong Seng were promoted as Vice Principals. |
| 2009 | Class One of the English Section and After School Care Service Child-care Service were established. |
| 2010 | Ms. Lam Mei Pou and Ms. Iu Pek Fong were promoted as Vice Principals. |
| 2012 | Portuguese teaching was added in one of the classes of Class Four. |
| 2013 | Fr. Thomas Lee, SDB, took over the post of School Supervisor.
Ms. Lai I Fan was promoted as Principal. |
| 2018 | There are totally 48 classes, 4 classes in each grade from Primary One to Six of the Chinese and English Sections.
Mr. Chan Ka Lok took over the post of vice principal from Mr. Ip Hong Seng. |
| 2020 | Ms. Iu Pek Fong took over the post of principal from Ms. Lai I Fan.
There are totally 161 teachers and staff, 1610 students (1505 boys and 105 girls). |
| 2021 | Cheers to the successfully held Open Day in the celebration of our school’s 20th anniversary on the Feast of St. John Bosco, January 31, 2021. |
