Alto International School regularly hosts interns from German-speaking countries and universities around the world.

Internships typically last three months or longer. While intern observations and practical work will typically focus on one class, every attempt will be made to give interns a well-rounded learning experience in other areas of the school as well. Every intern will be assigned a mentor who will meet with him or her on a regular basis and will provide a written report at the conclusion of the internship.

Interns will be asked to work in a classroom under the direct supervision of an Alto teacher and will be assigned various instructional tasks. Based on experience and confidence, these can vary from teaching a full class, a small group, or an individual student, to assisting in a support role. Interns are expected to show an outstanding attitude, collaboration, and enthusiasm to take on a variety of tasks inside and outside of the classroom. Due to the large number of applicants each year, the school will select only those interns that are the best fit for the school environment.