Chief executive Hone McGregor said winning the contract was the culmination of two years' intensive work. "We won ahead of six other short-listed international consortiums."
Bangladesh has 9.4 million pupils attending 18,677 secondary schools staffed by 240,000 teachers.
PINZ will deliver certificate-level training to 110,000 untrained teachers and provide in-service professional development to 180,000 other trained and untrained teaching staff. It will also select a group of more than 70 Bangladeshi secondary teacher education experts to attend overseas master's-level study programmes.
A team of PINZ education specialists will live in Dhaka for six years and work with various Bangladeshi education agencies.