For three consecutive years (2000-2001, 2001-2002 and 2002-2003), Mzizima was awarded the Certificate Of Excellence (1st Grade) from the Minister of Education and Culture and Inspectorate, Eastern Zone, Tanzania, for exemplary performance at the Tanzanian National Examinations.

In 2002, 2003 and 2004 the School was recognized by the Ministry of Science, Technology and Higher Education for producing the Best Girl students in Sciences in Tanzania. This award encourages girls to opt for science subjects by recognizing the top three performers in Physics, Chemistry and Biology and the overall best girl student in the Sciences. In 2004, Zuhura Mwale, Everyn Mkutchika and Martina Komba were proud recipients of this award. The school was also given a cash award of Tshs 900,000 for the second consecutive year.

Farah Ahmed of Grade 10 won the CIS (Council of International Schools) Award Design Competition 2005 worldwide. This winning design will be a background on the Certificates awarded to students for "outstanding achievements" in International Schools under CIS.

Academic Results
Mzimima students sit for three public examinations at Form II, IV and VI levels. Upon successful completion of the Form IV and VI examinations, students are awarded the Certificate of Secondary Education Examinations (CSEE - ‘O’ level) and the Advanced Certificate of Secondary Education Examinations (ASCEE - ‘A’ level) respectively. It is awarded by the National Examination Council of Tanzania. The School Inspectorate conducts the Form II examinations on a Zonal basis and is an attempt to ensure and enhance quality.