One of my friends sent me the following link (Thanks, Ling!):
Arkansas State is implenting ACT's WorkKeys assessment statewide. The certificate has three levels (Gold, Silver, and Bronze). It reminded me of UK's National Vocational Qualification (NVQ). However, the skills that Arkansas State is measuring are three: reading for information, applied mathematics, and locating information.
For more detailed information, I highly recommend the follwoing video to any workforce development related people: http://www.state.ar.us/esd/Programs/CRC/CRCVideo.htm