Apr 24, 2010 12:24 PM by Associated Press
A proposed overhaul of Colorado's teacher tenure law has cleared its first hurdle.
The Senate Education Committee approved a bill Friday that would make tenure available only to teachers who have improved student performance for three straight years.
Teachers who have tenure could lose it if their students fail to show progress for two straight years.
The teachers' union says the bill doesn't provide training for principals who will be evaluating teachers and hasn't determined how teachers will be judged.