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| Year10 | Information session on the IB Diploma Programme at Lessing-Gymnasium for interested parents and students |
| Year 10 | Alongside the information session on the subject elections for upper secondary school, general information about the IB programme will be provided in the classes. |
| Entry into Year 11 (EF/Einführungsphase) | Biology must be taken. In addition, two subjects must be chosen from History, Social Sciences, a second foreign language (Italian or French) and Chemistry. |
| January / February in Year 11 (EF/Einführungsphase) | Full day IB Diploma Programme information session |
| After the spring holidays in Year 11 (EF / Einführungsphase) | Submission of the IB subject selection form together with the advanced level course selection (LK-Wahlen) |
| At any time by arrangement | IOne-to-one consultation appointments |