DEEN
The Estonian Education Information System (EHIS) is Estonia's central education register, run by the Ministry of Education and Research. It records every pupil, student and formal education in the country — from pre-school to higher-education degrees. The largest consumer is, surprisingly, Ridango (student transit fares via ISIC), followed by municipal school administrations and the Unemployment Fund.
The EHIS services fall into four clusters — identity & cards (the main load), school, vocational & higher education, and labour-market links. Shares are daily averages over Dec 2025 – May 2026. Each cluster has its own detail page.
The most-used service endpoints across all four clusters, as requests per day. The cluster pill links to the detail page.
| # | Service | Cluster | Calls / day | Avg ms |
|---|
How do the roughly 193,000 calls/day flow from the service clusters to the consumers?
Hourly distribution of calls across the day, averaged over the period.
What the aggregate data reveals about the education register (EHIS).
Via the pankOppurLaenListV2 service, only banks (LHV, SEB, Luminor) query student status — the basis for the state-guaranteed study loan (õppelaen), available only to enrolled students. Low volume (~32 calls/day), as applications cluster at the start of the academic year (Aug–Sep); the Dec–Apr window understates the annual peak. (Inferred from the service name, supported by the bank-only usage.)
The transit provider Ridango is the largest consumer at about 102,000 calls/day — every ticket validation checks the student status for discounted fares.
EHIS data flows to the Unemployment Fund (status), municipal school offices and other authorities — a classic cross-cutting register.