It incorporates many changes required to conform to the certification standards.

One is how much stress a plane should be able to withstand under certification standards set by regulatory agencies.

"A lot of the certification standards are put out there so engineers will know how to design the plane," said a safety board investigator.

School districts are now able to set their own certification standards.

There are many certification standards in existence today for both the compliance and voluntary credit markets.

Participants felt that states should be encouraged to establish certification standards to ensure proper training.

As of 2005, over 200 persons worldwide have met certification standards.

A certification standard is being written for the trace machines.

For some in the industry, its fast growth and lack of certification standards are invitations to fraud.

We need to have good training and certification standards for people doing this work.