Willowbrook offers winter and summer programs. The winter session is during the break in December. The summer program runs throughout the summer in weekly sessions. Each weekly session follows a fun curriculum unit. Parents can pick and choose the weekly sessions according to their summer schedule. The daily routine for both the winter and summer program includes circle time (songs and stories), snack, project time (art, science, cooking), group game, lunch, nap, water play and dismissal.

The tuition fees are ¥55,000 per week for Willowbrook students and ¥60,000 per week for non-Willowbrook students. The tuition fee includes a 5% consumption tax. Application due date was may 16th for 2008 Summer Program.