Lies

Supporters of the public employee unions have recently been circulating state-by-state information on collective bargaining, and then comparing it to statistics on ACT and SAT performance in the respective states. This "data" started to be passed around via Twitter and Facebook; for example, "5 states forbid collective bargaining for educators: SC, NC, GA, TX, & VA. Their national rank in ACT scores: 50th, 49th, 48th, 47th, 44th."(link)

Sounds like unions are good for kids eh?

As it turns out, these ratings are bogus.  For each state it adds the ranking for SAT scores to the ranking for ACT scores (and it's not even clear what year the data comes from), but it doesn't take into consideration the percentage of the population who take either test.

Heh, didn't think so. Go over and read the rest of a throrough debunking of an emergent 'net myth.