Most experts believe these are key elements of an effective program.
Such claims get in the way of effective programs to reduce drug use.
The most effective programs give children the opportunity to practice the new skills that they learn.
It is unclear how effective the summer program was last year.
If the government isn't behind it, it's much more difficult to have widespread effective programs throughout the country.
The most effective program in the series is the last.
"We have what I would call a very sound and effective program," he said.
Even a heavy fuel tax would be only the beginning of an effective global program.
You already have a safe and effective program, so why take the risk?
"We have the most effective and efficient program in the country."