You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Comprehensive_school

Context:
Germany has a comprehensive school known as the Gesamtschule. While some German schools such as the Gymnasium and the Realschule have rather strict entrance requirements, the Gesamtschule does not have such requirements. They offer college preparatory classes for the students who are doing well, general education classes for average students, and remedial courses for those who aren't doing that well. In most cases students attending a Gesamtschule may graduate with the Hauptschulabschluss, the Realschulabschluss or the Abitur depending on how well they did in school.

Question:
What are the different kinds of certificates that Gesamtschule students can earn?

the Hauptschulabschluss, the Realschulabschluss or the Abitur