The Gilder Lehrman Institute of American History provides programs for teachers during the summer months. These several day/week long seminars are geared mostly toward topics for history and social studies teachers, but in viewing the 2016 course options, this language teacher was even able to find a few that sparked my interest.
The program is not completely free, but costs are minimal. Participants are asked to pay a registration fee and for some materials, but a stipend is offered for travel expenses. They can also request continuing education units at a cost as well.
To find out more and see the 2016 list of courses,
click here. You can also sign up to receive a reminder to register when the 2017 window opens.