The state Education Department sent a memo this week to school districts asking for comment on the idea, which would go into effect in 2015. The state says it is taking input until Nov. 15.
The plan is to require a 3.0 grade-point average to get a teaching certificate with some allowances for those with slightly lower grades.
Currently, the state requires at least a 2.5 average, or between a B minus and C plus.
A handful of states and many college teaching programs already require a 3.0.
New Jersey is also looking into a final college exam for teachers.