Online Studienkolleg (OSK)

Owner: Michael Stadler, Tomal Mustafa

Rua guilhermina suggia 6A Lisbon

Lisbon 1700-126

Email: [email protected]

The Institute assumes no liability for web content and e-mails created using domain extensions that are not owned by the  OSK.

By using the online pages of the OSK, you acknowledge the following disclaimer:


The information on the online pages of the OSK is compiled and maintained with the utmost care and to the best of our knowledge. Nevertheless, a guarantee for a flawless, complete, up-to-date and always available website can not be guaranteed. Liability for any direct or indirect damage of a material or immaterial nature caused by the use or non-use of the information or website provided by the OSK is excluded. Use is solely at the user’s own risk, unless incorrect information was recorded intentionally or through gross negligence. The OSK expressly reserves the right to change or supplement parts of the pages or the entire offer without prior notice.

External links and links

As part of its online offer, the Online STK not only offers its own information, but also links to external websites. The content and design of external websites are not subject to the influence of the OSK. The link to third-party sites is not an endorsement, support or confirmation of the content there. Rather, the Online STK expressly dissociates itself from the content and design of linked external websites. The information, expressions of opinion or allegations of fact reproduced on the foreign pages are the sole ones

Responsibility of the respective authors of these pages. The OSK assumes no liability in this respect. The same applies to foreign entries in guest books, discussion forums and mailing lists.

Copyright and Trademark Law

The OSK endeavours to protect the copyrights of the graphics used in all publications, Sound documents, video sequences and texts, self-created graphics,

To use sound documents, video sequences and texts or on unlicensed graphics, Sound documents, video sequences and texts. All within the internet offer and possibly protected by third party brand and trademarks are subject without restriction to the provisions of the applicable trademark law and the ownership rights of the respective registered owners. Just because of the mere mention is not to draw the conclusion that trademarks are not protected by rights of third parties. Reproduction or use of such graphics, sound documents, video sequences and texts in other electronic or printed publications is not permitted without the express consent of the OSK.


Used images from https://unsplash.com. The author names and the pages of usage are described as following:

Mimi Thian – German A1

Priscilla Du Preez – English A2

Hunter newton – German course B1

Headway – German Course B2

Andrew neel – German course C1

Climate reality – German course C1

AC Almelor – Pathway course with uni prep

Ansgar Scheffold – Pathway course without uni

Alexis brown – IELTS

Priscilla Du Preez – PTE

You ventures – Business English

Vincent Eisfeld – German Flag Homepage

Jeswin Thomas – Vorbereitung Feststellungsprüfung Mathematik
Michael Dziedzic – FAQ
ThisisEngineering RAEng- Lehrer werden

Legal validity

This disclaimer is part of the website of the OSK. If individual phrases or parts of this text do not, no longer or no longer correspond to the current legal situation, the remaining parts of the document remain unaffected in their content and validity.