The A1, A3 and A5 Tiers
Microsoft 365 Education is licensed through three A-series tiers that mirror the structure — but not the pricing — of the commercial E-series. A1 is free for eligible institutions and provides web-based Office, Teams and the core education services. A3 is around $3.25 per user per month and adds the full desktop Office apps plus advanced management and security. A5 is around $8 per user per month and layers on advanced security, analytics, compliance and voice. These are faculty list prices; the student story is very different, and it is what makes education licensing distinctive within the broader advanced Microsoft estate.
The headline rates are low by commercial standards — Microsoft prices education aggressively — but with student populations in the thousands or tens of thousands, even small per-user differences compound fast. The tier decision is therefore the dominant cost lever, and it has to be made deliberately rather than defaulting every account to the same SKU.
| Tier | Faculty price (user/month) | Adds over previous tier |
|---|---|---|
| Microsoft 365 A1 | Free | Web Office, Teams, core services |
| Microsoft 365 A3 | ~$3.25 | Desktop Office, advanced management/security |
| Microsoft 365 A5 | ~$8.00 | Advanced security, analytics, compliance, voice |
The Student Use Benefit
The single most important rule in education licensing is the Student Use Benefit. An institution that licenses its faculty and staff on A3 or A5 can extend the equivalent A3 or A5 capability to students at a 40:1 student-to-faculty ratio — included in the faculty licence cost, at no additional per-student charge. In practice, a school paying for A3 across its staff can cover a large student body for free, which is why the faculty tier choice, not the student headcount, drives the cost.
A college with 800 faculty on A3 can cover up to 32,000 students under the 40:1 Student Use Benefit at no extra licence cost. Buying separate paid student licences on top of a qualifying faculty estate is one of the most expensive and most common education-licensing errors — the benefit is already paid for.
This is a structural advantage that has no equivalent in the commercial or government licensing tracks, and it rewards institutions that understand the rule. The faculty count and tier, combined with the ratio, define how far the student coverage stretches before any incremental spend is needed.
A3 vs A5: The Faculty Decision
Because the Student Use Benefit flows from the faculty tier, the A3-versus-A5 decision for staff is the decision that matters most. A5 at roughly $8 is more than twice A3 at $3.25, and the premium buys advanced threat protection, information governance, analytics and voice — capabilities many institutions license but do not fully operate. A5 is justified where the institution genuinely needs that advanced security and compliance posture; otherwise A3 across faculty, with targeted A5 or standalone add-ons only on the roles that need them, is materially cheaper.
This is the same "how concentrated are the advanced requirements" question that governs the commercial E3-versus-E5 choice and the Entra ID P1-versus-P2 identity decision. The answer is rarely "A5 for everyone" — it is "A3 as the base, A5 where the advanced features are actually used".
Mixing Tiers by Population
Faculty and students do not need to sit on the same tier, and usually should not. Faculty and administrative staff often need full A3 or A5 capability; many students are well served by free A1 or by the A3/A5 capability flowing through the Student Use Benefit. Licensing every user — faculty and student alike — at the same paid tier is the most common Microsoft 365 Education overspend. Map the requirement by population: free A1 wherever the desktop apps and advanced features are not needed, the Student Use Benefit wherever it covers the requirement, and paid faculty tiers only where the capability is genuinely used.
For multi-campus institutions and education service providers managing several tenants, the administration layer matters too — the same multi-tenant tooling discipline covered in our Microsoft 365 Lighthouse guide applies to managing education tenants at scale without losing control of tier assignment.
Buying Education Licensing Well
Education licensing is bought through Microsoft's academic volume agreements (such as Enrollment for Education Solutions), where the faculty count, tier mix and Student Use Benefit interact to set the bill. The levers are: pick the faculty tier deliberately, lean on the Student Use Benefit before buying any paid student licence, use free A1 wherever it suffices, and benchmark the academic pricing rather than accepting the first quote. That benchmark-led approach is set out in the Microsoft Enterprise Agreement Guide and supported by the Microsoft vendor intelligence hub.
Before your next enrollment renewal, audit faculty tiers, student coverage and any paid student licences that the Student Use Benefit already covers. To pressure-test your education licensing against current academic benchmarks, request a confidential briefing — over-licensed students and an over-specified faculty tier are the two fastest savings in any education estate.