Sample size: planned number of clusters
Will try to get all the students from the Lycée International de Los Angeles. Reasons for non-participation are (i) absence, (ii) failure to assent, (iii) the teacher preventing access. We expect between 35 and 65 students per grade.
We will enlist grades 4th to 11th for certain. Depending on availablility, we will also enlist grades 2 and 3, and 12, as well as up to 15 teachers.