Such "Hauptschulen" have comparatively low tuition fees and/or offer stipends. The "youth welfare office" may also cover the costs of the student attending a private "Hauptschule". The German state spends more money on students attending public "Hauptschulen" than it spends on students attending public "Realschulen" or "Gymnasien", and "Hauptschulen" have a more favourable student-teacher-ratio than those other types of school. "Hauptschulen" often have a very diverse student body in terms of ethnic groups, languages spoken at home, religions, social classes, and students' abilities. The schools face many challenges, because they sometimes have to educate students of average abilities alongside students that have learning difficulties or need special attention. In some German states, such as Bavaria, "Hauptschulen" offer different classes to their students. They offer the so-called M-classes for it advanced students, regular classes and the so-called P-classes for students who are struggling. Percentage of jobholders holding "Hauptschulabschluss", "Realschulabschluss" or "Abitur" in Germany:  Historically, a vast majority in Germany went to "Hauptschule"; in 2000 54.5% of jobholders had an "Hauptschulabschluss", indicating they graduated from one. However, in the 1970s an educational expansion started and parents started sending their children to better schools. Thus younger jobholders are less likely to hold a "Hauptschulabschluss" than older ones. The percentage of children attending a "Hauptschule" differs very much by region (it may be as high as 60% or as low as 4%). Most "Hauptschulen" reside in conservative areas (like Bavaria), because conservative parties want to strengthen the "Hauptschule", while the SPD closed "Hauptschulen", replacing them with comprehensive schools. In these areas, in many cases, the Hauptschule is not a school of first choice for a student and is attended by students, of whom is believed that they for a number of reasons may not profit from the more competitive environment of other schools. In some areas, where few students attend the "Hauptschule", and those who do often suffer from learning disabilities, "Hauptschule" students have come to be increasingly stigmatized over the last years, the opinion of the general public often being that "Hauptschulen" only harbor the bottom end of society.