K-12, one to one, small group, part-time or full-time instruction course for credit, tutoring, AP and Honors courses, , advocacy, SAT/ACT/BYU/ISEE/AP test preparation, college preparation, executive functioning, and more! History Established in 1981. Founded in 1981, located on Mercer Island, Yellow Wood Academy (formerly ETC) became an accredited private school in 2001. �Today we serve over 500 students in a variety of ways; we offer tutoring, test prep (SAT/ACT/ISEE/AP), executive functioning, courses for credit, and more. �Our highly skilled instructors and staff share a passion for helping students of all learning styles become confident, independent, lifelong learners. We realize that not every student thrives in a traditional school setting; we created a school that fits. In a one to one or small group setting, students are able to receive customized instruction that fits their needs.