Lower Saxony review finds 886 faulty school certificates over ten years

What the review found

Lower Saxony's Kultusministerin Julia Willie Hamburg (Greens) announced on Friday, 13 November 2026, that at least 886 school leaving certificates issued over the past ten years were wrong. The faulty certificates came from Oberschulen and Integrierte Gesamtschulen (IGS). The review covered all 96 public IGS with graduating classes and all 94 year-group-based Oberschulen in the state, though to differing degrees of depth. Of roughly 204,000 Sekundarstufe I certificates issued in that period, about 30,500 were checked. Hamburg put the error rate at 0.43 percent of all certificates and called the review the largest of its kind in the state's history. A comprehensive re-check of every certificate is not planned, because the ministry sees no reason to distrust schools that came up clean.

Oberschulen (44 schools)829

IGS (8 schools)57

Oberschulen (44 schools)

829 certificates

IGS (8 schools)

57 certificates

Data from the article text

Where the rule broke down

The problem centres on a grading compensation rule that lets a weak mark in one subject be offset by a better mark in another. Hamburg said the rule has been in force since 2016 and was interpreted differently until 2017, when Frauke Heiligenstadt (SPD) was minister. She placed responsibility on 'the whole system', citing the ministry's role in the rule's complexity, misunderstandings at individual schools and partly wrong advice from the regional school offices. In 2017 those offices were instructed to brief school leaders on applying the rule. Franz-Josef Meyer, state chair of the Verband Bildung und Erziehung (VBE), says only the Hannover district received guidance, and the rest of the state had to work out the rules among its schools. The VBE has described applying the differing norms as extremely difficult and very complicated.

Effects on students

Some pupils lost their route into the gymnasiale Oberstufe and with it the Abitur. In rarer cases pupils did not receive the Hauptschulabschluss. Some certificates were too generous, and these will not be corrected downward retroactively. At the Geschwister-Scholl-Oberschule in Vechta, more than 100 pupils received worse certificates than they should have since 2020, and two of them received no school leaving certificate at all. The ministry says the rule was applied incorrectly throughout only at this school. Certificates from the current school year were corrected immediately, and pupils who now hold a Realschule certificate instead of a Hauptschule one were advised on their new options and told they may claim damages.

How the case came to light

A former pupil from Vechta, a woman, contacted the education ministry in June. After the Neue Osnabrücker Zeitung reported her case at the end of July and unrest followed at the school, the ministry began checking certificates systematically. The review found 107 affected pupils at the Vechta school, plus 32 further lapses elsewhere. In those 32 cases teachers had discretion over whether to award a higher certificate, and that discretion was never considered. Hamburg said on Friday that this must now be made up for.

Next steps

Hamburg has apologised to everyone affected and said that even a single error is one too many. The rule is to be revised and simplified so that it is easier to understand from the 2027/28 school year. New school leaders are to receive better training. The state will support schools with many faulty certificates next year, and a digital tool is planned to help evaluate grades.