And that's what's fueling the secondary wave, added in along with the decline in home prices.

NPR: Mortgage Crisis Spreads To Conventional Loans

The leaders of the international rescue operation insist that everyone received some assistance, and the feared secondary wave of deaths was averted.

ECONOMIST: Myanamar after the cyclone

They are worried that the first wave of pupils to experience it in secondary schools will underachieve in exams because their teachers are not sure how to turn the loose objectives into day-to-day lessons.

BBC: Row over plans for new curriculum in Scotland

The mobile money industry has also triggered a new wave of development, inspiring the creation of many secondary businesses, ranging from innovative financial services to the provision of utilities and digital goods.

FORBES: Africa is Rising Fast

Since the 1980s, a wave of Asian and Hispanic immigrants has transformed the demographics of U.S. primary and secondary schools.

UNESCO: II Part Analytic Section