Since its establishment on September 9th, 1995, MCCE has achieved numerous milestones and accolades. Some of the notable achievements include:
- The first set of students who sat for the JSSC examination in 1997 secured the first position in Ebonyi State.
- In 2000, the pioneer students successfully completed the SSCE with excellent results.
- The school provides conducive classrooms for effective learning.
- MCCE has built state-of-the-art science laboratories to enhance practical learning experiences.
- The school has received awards from external competitions such as Olympia, Cowbell, Interswitch Spak, and others.
- MCCE has also been recognized with an award from the Inter-Marist Schools competition.
- Students from MCCE have won Bronze, Silver, and Golden medals in various competitions.
- The school was awarded the title of the best school in Chemistry in 2023 (Olympia 2023).
- MCCE celebrated its 25th anniversary in 2021, marking a significant milestone in its journey.
These achievements highlight the commitment to excellence and continuous growth at MCCE.