Of all generational cohorts, older millennials are most likely to generate enough income to retire comfortably, according to the latest Vanguard Retirement Readiness report.
Specifically, millennials aged 37-41 have the greatest chance of landing a comfortable retirement.
IRS defines 403B plans, which are similar to 401k, but specific to teaching. Also public school teachers have retirement plans through unions (at least in NY, MA, CA)