Okla. Stat. tit. 70, § 70-17-203: Alternative retirement plans authorized – Permitted

investments.

Alternate retirement plans for eligible employees are hereby

authorized at participating institutions in lieu of the retirement

plan offered by the Teachers' Retirement System of Oklahoma.

Alternate retirement plans shall, for eligible employees, provide

retirement and death benefits to such employees through the purchase

of annuity contracts, qualified retirement trusts or custodial

accounts, fixed or variable in nature, or a combination thereof, at

the option of the participating institution.