15 years work as a teacher at the private Montessori school in the children center (Director: Prof. Dr. Dr. Theodor Hellbrügge) in Munich in integrated classes with handicapped and non- handicapped children (elementary – and secondary level) – as well as in groups with mentally retarded children. –
6 years also as director.
2 years work as trainer for Montessori special education at the Academy for developmental rehabilitation (children center in Munich) – A.M.I. Training for Montessori Special Education
Since 1988 direction of different seminars, workshops and Montessori-Trainings – as well as lectures in Germany; Austria; Switzerland; Italy; Ireland; Norway; Sweden; Netherlands; Poland; Czech Republic and Hyderabad (India).
1990 – 2014 Director of the Institute for Holistic Learning – since 2014 pedagogical director of the Montessori Academy Biberkor.
Author of many Montessori practice books
Member of the Association Montessori Internationale (A.M.I.) From the beginning active member of Montessori Europe
On the Examination Board of Modern Montessori International (MMI)