And he said it should set tougher requirements for teachers to earn tenure, including "qualitative information about how a teacher's students perform over multiple years."

That teacher would still be entitled to a teaching position in the state because he or she has earned tenure.

And the contract does not give any teachers, no matter how long they have worked at the school, a way to earn tenure.

Halperin taught at Queen's until 1966, earning tenure as a full professor.

A principal now may earn tenure after five years' probation.

She earned tenure at Columbia University in the 1980s.

Superintendents are the only administrators who cannot earn tenure.

She earned tenure in 1998 upon her earliest eligibility.

It is difficult to fire teachers who earn tenure.

Ms. Levin earned tenure last year and is currently on leave.