Radrodro says the 114 affected staff received their salaries yesterday following assistance from the Ministry of Finance.
He has apologised to those affected, saying the salary issue caused concern and disruption.
Radrodro says the Permanent Secretary for Education has been directed to investigate what happened, why it happened and where the Ministry's processes failed.
He says appropriate action will be taken based on the findings of the investigation.
Radrodro has also directed the Ministry to strengthen its internal processes to ensure salary and other staff-related matters are addressed quickly and properly.
Meanwhile, as students return for the new school term, Radrodro is urging students, teachers and parents to work together to improve academic results.
He says the term is particularly important for students preparing for the Year 8, Year 12 and Year 13 national examinations.
Radrodro is encouraging students to remain focused, take their studies seriously and make full use of the support available from their teachers and families.
He has also acknowledged teachers for continuing to support students despite the challenges they face.
The Ministry is targeting a 97 percent pass rate and says achieving this will require commitment from students, teachers, parents, school leaders and education officials.
Ministry officials will also visit schools, districts and divisions during the term to meet education stakeholders, hear their concerns and monitor programmes.
Radrodro says the Ministry's main focus remains on improving learning outcomes and giving every child the opportunity to succeed.