The 10 best students of the 3rd round should be able to solve complex practical and theoretical tasks of biology under examination conditions. The 4th round takes place at the end of May/beginning of September of the IBO year and selects the best 4 pupils (German team) for further preparation for the International Biology Olympiad.
Evaluation: The examinations (practice/theory) are corrected at the IPN.
Acknowledgement: Besides the certificates, monetary prizes of � 500,- are made. The four best ones participate in the IBO. Young people particularly eligible for promotion are accepted by the German National Merit Foundation.