Do you really want teachers in the classroom at age 80?  Get your facts straight.  Teachers currently entering the system no longer have a fixed retirement.......very few teachers currently working are tier I.  That is one of the problems since new teachers no longer fund TRS.  No new money goes into the fund and it is harder to find new teachers to even teach.  Who wants to teacher until age 65 and retire without a fixed retirement?  You get what you pay for.