Grad school at the UMN is ~$10k a semester (https://onestop.umn.edu/finances/costs/tuition). Would have been ~30 years old, $40k in debt as a beginning teacher in MN. Amazingly, none of that includes actual experience teaching lol.
The teachers union has been waging a war against future teachers to benefit current teachers for 30 years and this is what that looks like after 30 years.
Similar to housing and zoning, education is a government racket.