Are there limits to what a retired teacher can make if they return the classroom?

The limits on what a retired teacher can make while returning to the classroom vary significantly depending on the state and the specific retirement system. There isn't a single national rule.

Some states have no restrictions at all. Others impose earnings limits that, if exceeded, can reduce or suspend their retirement benefits. These limits can be annual earnings caps or based on a percentage of their retirement benefit. Some states may also have different rules for part-time versus full-time employment.

To determine the specific limits for a retired teacher, you need to check the regulations of the specific state's retirement system where they retired. The retirement system's website is the best place to find this information, or contacting the system directly.