Do employers normally go back 30 years when checking for college degrees?

No, employers almost never go back 30 years when checking for college degrees. While some background checks might delve into a candidate's history to verify employment, a 30-year-old degree verification is extremely rare. Most background checks focus on recent employment and criminal history, and degree verification typically only concerns the most recent degrees listed on a resume, especially those directly relevant to the position. There's no practical reason or legal justification for such an extensive historical check of education, unless there's a highly unusual circumstance or suspicion of fraud involving extremely old credentials.